CN102332056B - Information visualization technology-based house property data visualization system - Google Patents
Information visualization technology-based house property data visualization system Download PDFInfo
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Abstract
The invention discloses an information visualization technology-based house property data visualization system, which comprises a premise map visualization component, a tree graph visualization component, a parallel coordinate visualization component, a time flow graph visualization component and a collaborative analysis component, wherein the premise map visualization component is used for labeling actual geographical positions of various on-sale premises on a map according to the map and the geographical position data of the premises; the tree graph visualization component is used for indicating a premise by a rectangular diamond, and showing a certain numeric data of a corresponding premise by the color or area of the rectangular diamond; the parallel coordinate visualization component is used for visualizing multi-dimensional data; the time flow graph visualization component is used for visualizing timing data by using a time flow graph; and the collaborative analysis component is used for closely connecting various visualization components and correspondingly displaying different visualization effects of selected data in other components in real time when a user performs different selection operation in different visualization components. The information visualization technology-based house property data visualization system has the advantages of uniform data drawing, dynamic display, and high mining capacity and interactivity.
Description
Technical field
The present invention relates to information visualization and the visual analysis technology of the multi-field intersections such as computer graphics, man-machine interaction and psychology, especially a kind of house property data visualisation system.
Background technology
Information visualization is the new development of visualization technique, and it extends to large database field by visualization technique from science calculating field, by the data item in database being converted to the form of graph image, finds contact and the rule of development of data inherence.Along with the capacity of data set constantly increases, the improving constantly of complicacy (as dimension), use traditional data analysis and Data Mining Tools to carry out Treatment Analysis, seemed unable to do what one wishes, therefore needed more effectively mode to carry out visual analysis to data.Information visualization is to utilize computer graphics and image processing techniques that abstract data is displayed in visual form, auxiliary with corresponding interaction technique, finally reaches the object that strengthens user cognition.Utilize information visualization to carry out visual analysis, can help people:
1) synthetic numerous and diverse, dynamic and with the data of ambiguity and conflict, and therefrom obtain the deep understanding to data;
2) result that expection is wished detected, find unknown trend and phenomenon;
3) while providing logarithm factually, reliable, intelligible assessment;
4) by coordination technique, with other people Cooperative Analysis assessment result.
In the China of current rapid economic development, real estate flourish.Calendar year 2001, in order to boost consumption, real-estate market is develop rapidly also along with the rapid development of China's economic, more and more flourishing.Be a large turn point of Chinese real estate in April, 2003, and the room rate constantly soaring makes that common people are unable to be born, and Chinese Government has implemented macro adjustment and control policy for this reason, and in July in the same year, national government takes up again in rectifying land market.In January, 2007, Minstry of Housing and Urban-Rural Development of People Republic of China (MOHURD) formally started standard estate agent industry.Simultaneously State General Taxation Administration's another beginning of taking turns macro adjustments and controls of 2007 of having cleared again this behave sign of increment tax on land value.Gai Nian Central Bank in March increases the interest for 2007 again, thereby June, Chinese Government was by strengthening that the management of foreign capitals is further controlled to the overheated situation of real-estate market foreign capitals, this a series of behave has all ensured nothing but common people's people's livelihood problem, has solved common people without the available problem in room.In January, 2008, State Council promulgated that severe strike of a series of relevant policies hoards land.2010, various places government put into effect house limit and purchases order, strictly controlled family's house-purchase tricks.
Real estate becomes one of mainstay industry of China to a certain extent, but the economic development of development trend Yi Dui China that it is bad produces harmful effect, thereby in country to the macro adjustments and controls of real estate with under the economic self-control of real-estate market, make the analysis of real estate data and deeply excavated the vital task developing in a healthy way into this industry of current promotion.The present invention be take Hangzhou real estate as example, relate to ground in visualization technique and learn the technology such as visual, parallel coordinates, tree graph, time flow graph, be intended to by the visual analysis to Hangzhou real estate data, and assist and excavate with user interactions the important information comprising in house property data.The present invention analyzes house property current development situation and promotes that house property industry develops in a healthy way all significant to house purchaser and real estate researchist.
Current not enough to the main following points of the visual means for real estate data:
1) house property data are directly plotted on map, as building nodal information is directly plotted on map, by color, represent the average price (or other information as on sale, not sell etc.) of building.When building quantity is too much, this single mode just there will be draws mixed and disorderly phenomenon, is also not easy to user and selects interested building.
2) what the current time for house property data changed is visual, what often adopt is more single broken line graph, as draw each block of city (or building) variation of average price (or housing sale quantity) in recent years, when block or building quantity are when more, there will be equally and draw mixed and disorderly situation, user is difficult to intuitively find out the trend of each data item.
3) current real estate data visualization mode, often on static visual presentation, lacks and explores mining ability, lacks the mutual of user, and very difficult discovery is hidden in unknown information and the knowledge in data.
4) between visual each assembly, be difficult to connect, lack the ability of Cooperative Analysis, cannot effectively make to transmit between different assemblies with relevant information, knowledge, evidence, the judgement of data, make to be difficult to go deep into the information in mining data.
Summary of the invention
In order to overcome the data of existing existing house property visualization technique, draw chaotic, static displaying, lack mining ability, the poor deficiency of interactivity, the invention provides the house property data visualisation system based on Information Visualization Technology that a kind of data are drawn unification, Dynamic Display, had good mining ability and interactivity.
The technical solution adopted for the present invention to solve the technical problems is:
A house property data visualisation system based on Information Visualization Technology, described house property data visualisation system comprises:
Building map visualization assembly, in order to according to map and building geographic position data, on map, mark out the actual geographic position that each sells building, user browses, inquires about all building positional informations on map, specifies certain some building to give prominence to or hide and shows; On map operation, user arbitrarily convergent-divergent, moving map checks detailed house location; When user selects a certain building label, map components presents hiding Info of this house in prompting frame mode, described in hide Info and comprise price, opening quotation time and area;
Tree graph visualization component, in order to adopt a rectangular block to represent a building, the a certain numeric type data of showing corresponding building with color or the size of rectangular block, its spacial flex utilization factor of 100% of tree graph makes it can disposable all buildings be plotted in the rectangular area of appointment; Adopt prosization layout type, this layout type makes the length breadth ratio of all rectangular blocks level off to 1 as far as possible, when newly add rectangular block in current generation display area after, obtain length breadth ratio with respect to being favourable on last stage, so just continue to add rectangular block; Otherwise just finish the current generation, start new next stage, so recurrence is gone down; Adopt spacial ordering layout type, use the data projection technology of skew original geographical graphic position, make the placement position of rectangular block in tree graph approach the position in actual map;
Parallel coordinates visualization component, for visual multidimensional data, parallel coordinates is by drawing n bar parallel coordinate axes, each data item according to the size distribution of its each property value in each coordinate axis, thereby form the broken line across n bar parallel coordinate axes;
Time flow graph visualization component, in order to the next visual time series data of flow graph service time, time flow graph represents the time by a certain coordinate axis, time from left to right or from top to bottom increases progressively successively, be uniformly distributed, another coordinate axis represents the numerical values recited of data item, and each data band represents a data item, the width means numerical value item size of data band, shows the relative size between different pieces of information item by the form being layering; Adopt storehouse layout type, the baseline that data band is used on each time is unanimously; Adopt symmetric configuration's mode, allow each data strip be directed to a certain axis symmetrical up and down;
Cooperative Analysis assembly, in order to closely to connect each visualization component, user, when different visualization components carry out different selection operations, is showing the different effect of visualization of selected data in assembly accordingly in addition in real time.
Further, in described tree graph visualization component, in the sequence of rectangular block, tree graph visualization component adopts the size of rectangular block to represent a certain attribute, and rectangular block is arranged from the upper left corner to the lower right corner in display area according to size, by such sortord, the significantly outstanding large rectangular block of Area comparison, checks for user's focal selection;
Adopt the shade of rectangular block to represent a certain attribute, and rectangular block is arranged from the upper left corner to the lower right corner in display area according to shade, by such sortord, can significantly distinguish the rectangular block of different colours, and present a kind of transition trend, for user, select corresponding block and check.
Further again, in described parallel coordinates visualization component, adopt coordinate axis to reset, by choosing a certain coordinate axis, and be dragged near another coordinate axis, can realize the exchange of two coordinate axis positions;
Adopt coordinate axis convergent-divergent to regulate the maximin of coordinate axis scope, change the max min of coordinate axis scope simultaneously or only change coordinate axis scope maximum minimum value, same coordinate axis convergent-divergent changes the distribution of data item in parallel coordinates;
Adopt brush technology, choose a certain numerical range in a certain coordinate axis, so in parallel coordinates, the data item height that belongs to this numerical range is light, be convenient to user and check that these data item distribute in other dimensions.
Technical conceive of the present invention is: ground is learned visual in order to the visual exploration of geodata, analysis, synthetic and represent, and focuses on the dynamic map of traditional visual heuristic process of support.It is that its Technology origin is in a plurality of fields, as fields such as geography, Geographical Information Sciences, cartography, data minings that a visual distinguishing feature is learned on ground.
In the data that produce in the world today according to estimates, have 80% to comprise georeferencing information (as geographic coordinate, address, postcode etc.).By georeferencing information, a large amount of different information can be integrated, the different pieces of information being about on the same space is assembled altogether.Traditional static map is limited to the interpretability of data, and ground is learned and visually can be realized the map more dynamic, interactivity is stronger, as the different levels that consult a map, amplifies the visual presentation that dwindles map and change map etc.The Visual Implementation has been learned on ground a series of cartography technology and practice technology, can show dynamic map data according to user's selection in real time, and wherein the most representative visual means is map shows mode.
Parallel coordinates (Parallel Coordinates) is one of field important technologies such as information visualization, visual analysis, in order to visual multidimensional data.Parallel coordinates is by drawing n bar parallel coordinate axes, and by data-mapping to two dimensional surface, each coordinate axis represents a dimension, the span of this dimension being uniformly distributed from minimum value to maximal value in this coordinate axis (or otherwise distributing).Therefore, for each data item, just can represent with a broken line across n bar parallel coordinate axes, similar data item will obtain similar broken line.Parallel coordinates provides brush technology, coordinate axis to reset the interaction techniques such as (dimension rearrangement), coordinate axis convergent-divergent, makes people can more in depth excavate high dimensional data.In the epoch of current " data explosion ", parallel coordinates has become one of the mainstream technology in the fields such as information visualization, visual analysis.
Tree graph is a kind of technology with the visual hiberarchy data of rectangle level nested mode, rectangle node size, color and layout type can be in order to the attribute that represents data (as numerical values recited, locus etc.), tree graph is the information visualization method that can effectively present high hierarchical data, by rectangle node, draw total data level, can use spacial flex in 100% ground.
It is hiberarchy datas that information world has a large portion data, and when data scale can be understood them intuitively compared with hour people, but when data scale increases, the membership credentials between data just can become complicated, easily obscure with the information comprising.Tree graph provides a kind of visual angle of checking on the whole whole hierarchical organizations, and it has utilized efficiently the display area of appointment and can provide clear and definite structural information and text message that node comprises.Compare with traditional static presentation layer aggregated(particle) structure data method (as the traditional tree structure) problems such as space availability ratio is low, interactivity is poor, the mutual control of tree graph makes the user can designated data structure (degree of depth, border) and content (show attribute as color draw), effectively carries out visual analysis.
Time flow graph is in order to visual time series data, in cartesian coordinate system, time flow graph represents time dimension by a coordinate axis, another one coordinate axis represents the numerical values recited of data item, each data band represents a data item, and use different colors to be distinguished, and this data item of the width means of band size at a time, width changes along with the variation of time.
Time flow graph has improved traditional storehouse figure (Stacked Graph), it shows each data band with a kind of special organic form, what strengthened greatly each data band can identification, strengthened aesthetic property simultaneously, overcome traditional broken line graph under the susceptible condition of data volume, easily occurred mixed and disorderly situation.
Beneficial effect of the present invention is mainly manifested in: data are drawn unification, Dynamic Display, had good mining ability and interactivity.
Accompanying drawing explanation
Fig. 1 is the Organization Chart of the house property data visualisation system based on Information Visualization Technology.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
With reference to Fig. 1, a kind of house property data visualisation system based on Information Visualization Technology, described house property data visualisation system comprises:
Building map visualization assembly, in order to according to map and building geographic position data, on map, mark out the actual geographic position that each sells building, user browses, inquires about all building positional informations on map, specifies certain some building to give prominence to or hide and shows; On map operation, user arbitrarily convergent-divergent, moving map checks detailed house location; When user selects a certain building label, map components presents hiding Info of this house in prompting frame mode, described in hide Info and comprise price, opening quotation time and area;
Tree graph visualization component, in order to adopt a rectangular block to represent a building, the a certain numeric type data of showing corresponding building with color or the size of rectangular block, its spacial flex utilization factor of 100% of tree graph makes it can disposable all buildings be plotted in the rectangular area of appointment; Adopt prosization layout type, this layout type makes the length breadth ratio of all rectangular blocks level off to 1 as far as possible, when newly add rectangular block in current generation display area after, obtain length breadth ratio with respect to being favourable on last stage, so just continue to add rectangular block; Otherwise just finish the current generation, start new next stage, so recurrence is gone down; Adopt spacial ordering layout type, use the data projection technology of skew original geographical graphic position, make the placement position of rectangular block in tree graph approach the position in actual map;
Parallel coordinates visualization component, for visual multidimensional data, parallel coordinates is by drawing n bar parallel coordinate axes, each data item according to the size distribution of its each property value in each coordinate axis, thereby form the broken line across n bar parallel coordinate axes;
Time flow graph visualization component, in order to the next visual time series data of flow graph service time, time flow graph represents the time by a certain coordinate axis, time from left to right or from top to bottom increases progressively successively, be uniformly distributed, another coordinate axis represents the numerical values recited of data item, and each data band represents a data item, the width means numerical value item size of data band, shows the relative size between different pieces of information item by the form being layering; Adopt storehouse layout type, the baseline that data band is used on each time is unanimously; Adopt symmetric configuration's mode, allow each data strip be directed to a certain axis symmetrical up and down;
Cooperative Analysis assembly, for closely connecting each visualization component, user, when different visualization components carry out different selection operations, is showing the different effect of visualization of selected data in assembly accordingly in addition in real time.
In the present embodiment, the present invention gathers data in a plurality of officials network platforms such as Hangzhou housing support and Public Buildings Administration, Hangzhou Bureau of Land and Resources, Hangzhou regional planning agency as visual testing data, screen wherein data available, arrange out building pre-sale permit, place block, building house tricks, sell tricks, can sell the mass data such as tricks, floor space, average price, total price, and by year with month grouped data save as CSV formatted file.
The present invention, after obtaining the concrete coordinate position of building, marks the actual geographic position of building on map, and user checks the particular location of building by convergent-divergent map; With parallel coordinates, carry out the multidimensional property of visual building, and auxiliary with interaction techniques such as brush technology, dimension rearrangement, coordinate axis convergent-divergents; With tree graph, carry out the distribution of visual all buildings on a certain attribute, and used a plurality of layout type; Time flow graph, in order to visual time series data, has also been used to multiple layout type simultaneously.
Above visual means is combined, and the present invention innovates the exhibition method of real estate data.With reference to Fig. 1, a kind of house property data visualisation system based on Information Visualization Technology, described house property data visualisation system comprises:
1) building map visualization assembly:
This assembly is according to Hangzhou map and building geographic position data, each sells the actual geographic position of building on map, to mark out Hangzhou, user can be well understood to each building in the distributed intelligence in Hangzhou, and this assembly provides building geography information necessarily for house purchaser and real estate researchist.The Hangzhou map that the present invention uses derives from Google Maps, and the house location marking on map is physical location exactly.
On map display base, the present invention has added following interactive function:
1. user can browse all building positional informations in Hangzhou on map, also can specify certain some building to give prominence to or hide and show, reduces the coverage rate between building label.
2. query function is provided, according to input title, searches for specific building and on map, show the specifying information of this building.
3. on map operation, user arbitrarily convergent-divergent, moving map checks detailed house location.
4. when user selects a certain building label, map components presents hide Info (as price, opening quotation time, the area etc.) in this house in prompting frame mode, after choosing certain building, can in other assemblies, check other information of this building, the collaborative visual analysis between each functional module makes analytical work become more thorough.
2) tree graph visualization component:
Tree graph visualization component represents a building (also can for other attributes are as geographical plate etc.) with a rectangular block, the a certain numeric type data (as building average price, can sell tricks etc.) of showing corresponding building by the color (or size) of rectangular block, its spacial flex utilization factor of 100% of tree graph can disposablely be plotted in all buildings in Hangzhou in the rectangular area of appointment it.Rectangular block color is darker, and the numerical value of this building selected properties (as average price etc.) is larger, otherwise; Simultaneously also can represent attribute with the area of rectangular block, the area of rectangular block is larger, and the numerical value of this building selected properties (as average price etc.) is larger, otherwise.
On rectangular block layout type, this visualization component has been realized following several layout type:
1. prosization layout type, this layout type makes the length breadth ratio of all rectangular blocks level off to 1 as far as possible, this placement algorithm is a kind of adaptive algorithm, each step of algorithm enters in spacial flex adds more rectangle, when newly add rectangular block in current generation display area after, obtain length breadth ratio with respect to being favourable on last stage, so just continue to add rectangular block; Otherwise just finish the current generation, start new next stage, so recurrence is gone down.Prosization layout type can reach good display effect, it can allow user in reciprocal process, choose more easily a certain rectangle block, make user interactions more friendly, the layout type of prosization is more suitable in text the filling in rectangular block simultaneously.
2. spacial ordering layout type, this layout type is used the data projection technology of skew original geographical graphic position, make the placement position of rectangular block in tree graph approach the position in actual map as far as possible, utilize prosization layout type to make the length breadth ratio of rectangular block level off to 1 simultaneously as far as possible.By spacial ordering layout type, the position by rectangular block in tree graph and the position in actual map is organic couples together, user can just can find fast this rectangular block according to actual geographic position in tree graph, greatly strengthens user's experience.
In the sequence of rectangular block, this visualization component has been realized following several sortord:
1. with the size of rectangular block, represent a certain attribute, and rectangular block is arranged from the upper left corner to the lower right corner in display area according to size, by such sortord, can significantly give prominence to the rectangular block that Area comparison is large, for user's focal selection, check;
2. with the shade of rectangular block, represent a certain attribute, and rectangular block is arranged from the upper left corner to the lower right corner in display area according to shade, by such sortord, can significantly distinguish the rectangular block of different colours, and present a kind of transition trend, for user, select corresponding block and check.
3) parallel coordinates visualization component:
In the parallel coordinates visualization component using in the present invention, provide following function in order to visual house property data:
1. the dimension in order to show is set, be provided with pre-sale permit number, distribution state, average price, can sell tricks, can sell limit room these five dimensions, each data item according to the size distribution of its each property value in each coordinate axis, thereby form the broken line across n bar parallel coordinate axes, in order to the dimension showing, can optionally add and delete.
2. coordinate axis is reset, by choosing a certain coordinate axis, and be dragged near another coordinate axis, can realize the exchange of two coordinate axis positions, the mutual realization of resetting by coordinate axis, change the distribution of data item in parallel coordinates, made user's trend that further mining data distributes in parallel coordinates.
3. coordinate axis convergent-divergent, in order to regulate the maximin of coordinate axis scope, can change the max min of coordinate axis scope simultaneously or only change coordinate axis scope maximum minimum value, same coordinate axis convergent-divergent can change the distribution of data item in parallel coordinates.
4. brush technology, in order to choose a certain numerical range in a certain coordinate axis, and then in parallel coordinates, the data item height that belongs to this numerical range is light, be convenient to user and check that these data item distribute in other dimensions, the present invention use brush technology highlighted the higher part of building average price.
4) time flow graph visualization component
The next visual time series data of flow graph service time of the present invention, time flow graph represents the time by a certain coordinate axis, time from left to right (or from top to bottom) increase progressively successively, be uniformly distributed, another coordinate axis represents the numerical values recited of data item, each data band represents a data item, and the width means numerical value item size of data band, shows the relative size between different pieces of information item by the form being layering.Time flow graph structures is clear, reasonable, meets common people's aesthetic habit.Service time of the present invention, flow graph was shown each block building sales volume of Hangzhou and the popular building sales volume in Hangzhou in the coming year over the years.
This time flow graph visualization component has been realized following function:
1. storehouse layout type, in this layout type, the baseline that data band is used on each time is unanimously, therefore layout type is presented and is similar to storehouse form, be suitable for user and compare intuitively different pieces of information item size, the use habit of more catering to user.
2. symmetric configuration's mode, this layout type is let others take precedence, and to allow each data strip be directed to a certain axis symmetrical up and down, makes the numerical value change between different time points more level and smooth, and slope is less, more attractive in appearance, and its utilization factor to space is higher simultaneously.
3. user interactions easily, along with the slip of user's mouse in display area, time flow graph visualization component will be real-time the highlighted user region of streaking, user just can check the variation of different pieces of information item along with the time, if some data item is along with the time changes little, totally milder, and some data can present the situations such as sudden change situations such as (as building opening quotation) selling fast of transience; Meanwhile, this assembly can show in the mode of prompting frame the contained information of this this data item of time point (as detail time, average price numerical information etc.), and with line segment, represents the height at this place.
5) Cooperative Analysis assembly
The present invention is by realizing Collaborative Visualization assembly, by each visualization component inner tight link together, making the analysis of real estate data is no longer with single block analysis, by Cooperative Analysis, can greatly improve user to the perception of real estate data and cognitive ability.
User chooses after a certain building in map components, in parallel coordinates visualization component, just see highlighted broken line, the details that broken line has comprised this each attribute of building and each property value of having shown this building are in the residing position of each attribute of all buildings.
Equally, when user uses the highlighted a part of data item of brush technology in parallel coordinates, in map components, will demonstrate in real time the geographic position of corresponding data item, for user, check exploration.
The designed system for Hangzhou real estate data visualization of the present invention has the following advantages:
1) Information Visualization Technology is applied in the analysis and processing of real estate data, the new method that this real estate data visualization is analyzed and viewdata excavates, meet the needs that obtain, study and explore of different user to house property data message, filled up the blank that domestic real estate data visualization is analyzed.
2) with tree graph visualization component, show the overview of house property data, with size and the shade of rectangular block, represent a certain attribute of house property, and auxiliary with good interactive mode easily, make user very clear to the overview of house property data.
3) with parallel coordinates is visual, carry out visual analysis house property multidimensional data, user can be by multiple interactive mode, in parallel coordinates, freely explore house property data, in depth excavate house property data, enhancing is to the perception of house property data and cognition, and its good Fundamentals of Mathematics of parallel coordinates make analysis result more reliable simultaneously.
4) service time, flow graph carried out visual house property time series data, guaranteed the identifiability of each data item, had strengthened visual aesthetic feeling simultaneously, allowed the whole timing variations that user can quick sensing house property data.
5) Cooperative Analysis assembly is by the dynamic map in information visualization, the visualization components such as tree graph, parallel coordinates and time flow graph and user's behavior associates, it is the operation in a certain assembly according to user, dynamically in the assembly being associated, provide in real time different visualization result, greatly improve analysis efficiency.
Claims (3)
1. the house property data visualisation system based on Information Visualization Technology, is characterized in that: described house property data visualisation system comprises:
Building map visualization assembly, in order to according to map and building geographic position data, on map, mark out the actual geographic position that each sells building, user browses, inquires about all building positional informations on map, specifies certain some building to give prominence to or hide and shows; On map operation, user arbitrarily convergent-divergent, moving map checks detailed house location; When user selects a certain building label, map components presents hiding Info of this house in prompting frame mode, described in hide Info and comprise price, opening quotation time and area;
Tree graph visualization component, in order to adopt a rectangular block to represent a building, the a certain numeric type data of showing corresponding building with color or the size of rectangular block, its spacial flex utilization factor of 100% of tree graph makes it can disposable all buildings be plotted in the rectangular area of appointment; Adopt prosization layout type, this layout type makes the length breadth ratio of all rectangular blocks level off to 1 as far as possible, when newly add rectangular block in current generation display area after, obtain length breadth ratio with respect to being favourable on last stage, so just continue to add rectangular block; Otherwise just finish the current generation, start new next stage, so recurrence is gone down; Adopt spacial ordering layout type, use the data projection technology of skew original geographical graphic position, make the placement position of rectangular block in tree graph approach the position in actual map;
Parallel coordinates visualization component, for visual multidimensional data, parallel coordinates is by drawing n bar parallel coordinate axes, each data item according to the size distribution of its each property value in each coordinate axis, thereby form the broken line across n bar parallel coordinate axes;
Time flow graph visualization component, in order to the next visual time series data of flow graph service time, time flow graph represents the time by a certain coordinate axis, time from left to right or from top to bottom increases progressively successively, be uniformly distributed, another coordinate axis represents the numerical values recited of data item, and each data band represents a data item, the width means numerical value item size of data band, shows the relative size between different pieces of information item by the form being layering; Adopt storehouse layout type, the baseline that data band is used on each time is unanimously; Adopt symmetric configuration's mode, allow each data strip be directed to a certain axis symmetrical up and down;
Cooperative Analysis assembly, closely connects each visualization component, and user, when different visualization components carry out different selection operations, is showing the different effect of visualization of selected data in assembly accordingly in addition in real time.
2. the house property data visualisation system based on Information Visualization Technology as claimed in claim 1, it is characterized in that: in described tree graph visualization component, in the sequence of rectangular block, tree graph visualization component adopts the size of rectangular block to represent a certain attribute, and rectangular block is arranged from the upper left corner to the lower right corner in display area according to size, by such sortord, the significantly outstanding large rectangular block of Area comparison, checks for user's focal selection;
Adopt the shade of rectangular block to represent a certain attribute, and rectangular block is arranged from the upper left corner to the lower right corner in display area according to shade, by such sortord, can significantly distinguish the rectangular block of different colours, and present a kind of transition trend, for user, select corresponding block and check.
3. the house property data visualisation system based on Information Visualization Technology as claimed in claim 1 or 2, it is characterized in that: in described parallel coordinates visualization component, employing coordinate axis is reset, by choosing a certain coordinate axis, and be dragged near another coordinate axis, can realize the exchange of two coordinate axis positions;
Adopt coordinate axis convergent-divergent to regulate the maximin of coordinate axis scope, change the max min of coordinate axis scope simultaneously or only change coordinate axis scope maximum minimum value, same coordinate axis convergent-divergent changes the distribution of data item in parallel coordinates;
Adopt brush technology, choose a certain numerical range in a certain coordinate axis, so in parallel coordinates, the data item height that belongs to this numerical range is light, be convenient to user and check that these data item distribute in other dimensions.
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