CN107992593A - The rendering method and device of a kind of cake chart - Google Patents
The rendering method and device of a kind of cake chart Download PDFInfo
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- CN107992593A CN107992593A CN201711315790.2A CN201711315790A CN107992593A CN 107992593 A CN107992593 A CN 107992593A CN 201711315790 A CN201711315790 A CN 201711315790A CN 107992593 A CN107992593 A CN 107992593A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/90—Details of database functions independent of the retrieved data types
- G06F16/95—Retrieval from the web
- G06F16/958—Organisation or management of web site content, e.g. publishing, maintaining pages or automatic linking
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T11/00—2D [Two Dimensional] image generation
- G06T11/20—Drawing from basic elements, e.g. lines or circles
- G06T11/206—Drawing of charts or graphs
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T11/00—2D [Two Dimensional] image generation
- G06T11/40—Filling a planar surface by adding surface attributes, e.g. colour or texture
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Abstract
The invention discloses the rendering method and device of a kind of cake chart, this method comprises the following steps：According to the size of Page Container element, setting is used for the size for drawing the saleable vector graphics canvas element of cake chart；According to the size of the saleable vector graphics canvas element of setting, a saleable vector graphics canvas element is created in Page Container element；According to pretreated configuration item, cake chart is drawn with reference to saleable vector graphics canvas element.The present invention can set the cake chart suitable for page area size according to the size of page area, and the level of cake chart can be determined according to the nested situation of data, and provide the cake chart suitable for different pieces of information structure according to level, while different screen size and device category user experience is improved, the cake chart met under different data format is shown.
Description
Technical field
The present invention relates to the rendering method and device of technical field of data processing, more particularly to a kind of cake chart.
Background technology
In data processing field especially data visualization field, the demand analyzed and processed to data increasingly increases.
In prior art, it usually needs data distribution situation is analyzed using cake chart, to check the detailed of data each several part
Thin information.For example the Echarts storehouses of Baidu's exploitation provide for the drafting interface of a variety of charts including cake chart, but
It is that the parameter type and quantity that can be passed to of drafting interface that Echarts storehouses provide are limited, and Echarts storehouses are one large-scale in itself
Project, Echarts storehouses are introduced in concrete operations, for actual items, which part function is redundancy.
The content of the invention
In view of this, one of technical problem that the embodiment of the present invention is solved is to provide a kind of presentation side of cake chart
Method, can set the cake chart suitable for page area size according to the size of page area, and can be according to the nesting of data
Situation determines the level of cake chart, and provides the cake chart suitable for different pieces of information structure according to level, is improving different screens
While curtain size and device category user experience, the cake chart met under different data format is shown.
In a first aspect, the embodiment of the present invention provides a kind of rendering method of cake chart, including：
According to the size of Page Container element, setting is used for the ruler for drawing the saleable vector graphics canvas element of cake chart
It is very little；
According to the size of the saleable vector graphics canvas element of setting, a scalable arrow is created in Page Container element
Spirogram shape canvas element；
According to pretreated configuration item, cake chart is drawn with reference to the saleable vector graphics canvas element.
It is described according to pretreated configuration item as the preferred embodiment of first aspect present invention, with reference to described scalable
Vector graphics canvas element draw cake chart the step of be specially：
According to the structure of data sequence in the object comprising configuration item, the level of cake chart is obtained；
According to the level of the cake chart, pie is drawn with reference to the non-data sequence item in the object comprising configuration item
Figure.
As the preferred embodiment of first aspect present invention, the preprocessing process of the configuration item includes：
The incoming object for including each configuration item of cake chart is replicated, to generate an object copy；
Configuration item in the object copies is converted into array；
The configuration item of transformed array form and the object comprising configuration item default value are merged, pre-processed
Configuration item afterwards.
As the preferred embodiment of first aspect present invention, the size according to Page Container element, sets and is used to draw
The step of size of the saleable vector graphics canvas element of cake chart, includes：
Before setting is used to draw the size of saleable vector graphics canvas element of cake chart, if current page container
The saleable vector graphics canvas element of the cake chart created is included in element, then by the cake chart created
Saleable vector graphics canvas element is removed.
As the preferred embodiment of first aspect present invention, according to pretreated configuration item, with reference to the scalable vector
Figure canvas element draw cake chart the step of be specially：
According to the background colour set in configuration item, cake chart is drawn in current saleable vector graphics canvas element
Background, and background colour is defaulted as transparent；
Data series in configuration item, draw the profile of cake chart, and the non-data sequence in configuration item
Item, draws the auxiliary information of cake chart.
As the preferred embodiment of first aspect present invention, the auxiliary information of the cake chart includes the title of cake chart, cake
The legend of shape figure, the prompting frame of cake chart, the display field of cake chart.
It is described according to pretreated configuration item as the preferred embodiment of first aspect present invention, with reference to described scalable
The step of vector graphics canvas element drafting cake chart, further includes：
According to the element in the data sequence of configuration item, the size of each section of calculating cake chart；
According to the size of each section, cake chart is drawn with reference to the saleable vector graphics canvas element.
It is described according to pretreated configuration item as the preferred embodiment of first aspect present invention, with reference to described scalable
Vector graphics canvas element further includes after drawing the step of cake chart：
When detecting the change in size of the change of the data sequence in configuration item and/or Page Container element, remove former
Some cake charts, and cake chart is repainted according to the data sequence after change and/or Page Container element.
Second aspect, the embodiment of the present invention additionally provide a kind of presentation device of cake chart, including：
Canvas size module is set, for the size according to Page Container element, sets and is used to draw stretching for cake chart
The size of contracting vector graphics canvas element；
Newly-built graphic element module, for the size of the saleable vector graphics canvas element according to setting, holds in the page
A saleable vector graphics canvas element is created in device element；
Drafting module, for according to pretreated configuration item, being drawn with reference to the saleable vector graphics canvas element
Cake chart.
As the preferred embodiment of second aspect of the present invention, the drafting module is specifically used for：
According to the structure of data sequence in the object comprising configuration item, the level of cake chart is obtained；
According to the level of the cake chart, pie is drawn with reference to the non-data sequence item in the object comprising configuration item
Figure.
The rendering method and device of a kind of cake chart provided in an embodiment of the present invention, can set according to the size of page area
The cake chart suitable for page area size is put, and the level of cake chart can be determined according to the nested situation of data, and root
The cake chart suitable for different pieces of information structure is provided according to level, is improving the same of different screen size and device category user experience
When, the cake chart met under different data format is shown.
Brief description of the drawings
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present invention, for
For those of ordinary skill in the art, without creative efforts, other can also be obtained according to these attached drawings
Attached drawing.
Fig. 1 is a kind of flow diagram of the rendering method of cake chart provided in an embodiment of the present invention；
Fig. 2 is a kind of another flow diagram of the rendering method of cake chart provided in an embodiment of the present invention；
Fig. 3 is a kind of structure diagram of the presentation device of cake chart provided in an embodiment of the present invention.
Embodiment
In order to make those skilled in the art more fully understand the present invention program, below in conjunction with the embodiment of the present invention
Attached drawing, is clearly and completely described the technical solution in the embodiment of the present invention, it is clear that described embodiment is only
The embodiment of a part of the invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill people
Member's all other embodiments obtained without making creative work, should all belong to the model that the present invention protects
Enclose.
With reference to shown in Fig. 1, the embodiment of the invention discloses a kind of rendering method of cake chart, this method includes：
101st, according to the size of Page Container element, the saleable vector graphics canvas element for being used for drawing cake chart is set
Size.
In the present embodiment, before cake chart is drawn, cake is included for one by the actual parameter being passed to of unified parameters interface
The object of each configuration item of shape figure.Configuration item includes background colour, prompting frame is set, legend is set, title is set, display is set, face
Chromatic number group, data sequence etc., wherein background colour, prompting frame are set, legend is set, title is set, show setting, color array etc.
It may be collectively referred to as non-data sequence item.
Specifically, in a kind of possible implementation, the preprocessing process of configuration item is included：
A1, replicate the incoming object for including each configuration item of cake chart, to generate an object copy；
Same instance can be directed toward during due in Java language to different variable assignments objects, because of this during to avoid subsequent treatment
One mechanism cause it is unnecessary obscure and mistake is, it is necessary to first replicate the object for include each configuration item of cake chart that is passed to of user, give birth to
The object copies of Cheng Yixin.
A2, by the configuration item in object copies be converted into array；
It can be object form or array form when incoming to have part configuration item in the object copies of generation, for ease of follow-up
It is uniformly processed and using, it is necessary to by this part configuration item, including legend setting, title setting etc., is uniformly converted into array form.
A3, merge the configuration item of transformed array form and object comprising configuration item default value, obtains pre-
Configuration item after processing.
When actually drawing, all configuration items need that non-null states will be in cake chart, then need one at this time comprising all
The object of configuration item default value carries out Initialize installation, and the configuration item of the transformed array form set with user carries out
Merge, so as to obtain pretreated configuration item.
After being pre-processed to configuration item, and, it is necessary to first calculate Page Container element before cake chart is drawn
Size, then according to the size of the Page Container element, sets the saleable vector graphics canvas element for being used for drawing cake chart
Size.Wherein, the size includes long and wide.
In addition, the normal display of the sub-component in order to ensure cake charts such as legend, prompting frames, need to be by Page Container element
Positioning properties are arranged to relative positioning.
Preferably, before setting is used to draw the size of saleable vector graphics canvas element of cake chart, if currently
The saleable vector graphics canvas element of the cake chart created, the then pie that will have been created are included in Page Container element
The saleable vector graphics canvas element of figure is removed.
In this way, it is possible to prevente effectively from occurs the exception such as redundancy or covering when subsequently creating saleable vector graphics canvas element
Situation.
102nd, according to the size of the saleable vector graphics canvas element of setting, newly-built one can stretch in Page Container element
Contracting vector graphics canvas element.
In the present embodiment, according to the size of the saleable vector graphics canvas element set in above-mentioned steps, in page
A saleable vector graphics canvas element is created in surface vessel element.
103rd, according to pretreated configuration item, cake chart is drawn with reference to saleable vector graphics canvas element.
In the present embodiment, after creating a saleable vector graphics canvas element in Page Container element, according to pre- place
Configuration item after reason draws cake chart.
Specifically, in a kind of possible implementation, drawing the process of cake chart includes：
B1, according to the background colour set in configuration item, draw pie in current saleable vector graphics canvas element
The background of figure, and background colour is defaulted as transparent；
, can be with the sequencing of addition in graphing for drawing the saleable vector graphics canvas element of cake chart
The shade situation of figure is determined, so it is being that current painting canvas fills the background that is set in configuration item before drawing other guide to need
Color, background colour are defaulted as transparent.
B2, the data series in configuration item, draw the profile of cake chart, and the non-data sequence in configuration item
List, draw the auxiliary information of cake chart.
Data series in configuration item, draw out the profile of cake chart simultaneously in saleable vector graphics canvas element
Each section for forming cake chart is filled with different colors.Wherein, the level of the profile of cake chart including cake chart and
Form the size of each section of cake chart, and the half of the cake chart calculated according to the size minimum value of Page Container element
Footpath.
Non-data sequence item in configuration item, draws the auxiliary of cake chart in saleable vector graphics canvas element
Information.
Preferably, the auxiliary information of cake chart includes the title of cake chart, the legend of cake chart, the prompting frame of cake chart,
The display field of cake chart.
Wherein, the title in the object of configuration item sets configuration item, to specify alignment thereof, color, font and sample
Pie graph title is drawn in the settings such as formula；Legend in the object of configuration item sets configuration item, corresponding each section of cake chart
Color draws cake chart legend, supports legend normally display and minimum function；Prompting frame in the object of configuration item is set
Configuration item is put, draws the prompting frame of each section of cake chart, and supports to show corresponding data name when cursor is moved to a certain section
And data message, and hide prompting frame after cursor removal；Display in the object of configuration item sets configuration item, in pie
Scheme each section correspondence position addition percentage numerical monitor, and corresponding data is added in direction radially outward in each section radius
Text importing and the line with corresponding section profile, can enrich the display effect for improving cake chart.
It should be noted that for the ease of binding event handling function, the prompting frame of cake chart is independently of scalable vector
Figure canvas element, is shown in the form of tag element in Page Container element.During in order to avoid follow-up newly-built prompting frame
There are the abnormal conditions such as redundancy or covering, it is necessary to which unnecessary tag element is purged.
Further, in a kind of possible mode, the level based on cake chart draws cake chart, specifically includes：
C1, the structure according to data sequence in the object comprising configuration item, obtain the level of cake chart；
C2, the level according to cake chart, cake chart is drawn with reference to the non-data sequence item in the object comprising configuration item.
On the basis of the above, according to the structure of data sequence in the object comprising configuration item, cake chart can also be judged
Belong to the situation or two layers of nested situation about showing of one layer of display, cake chart is then drawn according to the level situation of cake chart.
If the type of each element is numeral in data sequence, the level of cake chart is one layer；If each element in data sequence
Type is array, and the type of the element stored in array is numeral, then the level of cake chart is two layers.
Further, in a kind of possible mode, the size based on each section of cake chart draws cake chart, specific bag
Include：
D1, according to the element in the data sequence of configuration item, calculate the size of each section of cake chart；
D2, the size according to each section, cake chart is drawn with reference to saleable vector graphics canvas element.
On the basis of the above, the angular dimension of each section of cake chart is the numerical value divided by number according to a certain element of data sequence
It is calculated according to after the numerical value summation of sequence all elements multiplied by using 360 (unit degree), pie radius of graph is according to page
The length of surface vessel element and wide minimum value with 0.5 multiplied by being calculated.
After the profile of cake chart being drawn out according to the size of each section of cake chart in saleable vector graphics canvas element,
The different colours set in number of colours group configuration item in the object of configuration item, are filled each section.
Preferably, after step 103, further include：
104th, when detecting the change in size of the change of the data sequence in configuration item and/or Page Container element, clearly
Cake chart is repainted except original cake chart, and according to the data sequence after change and/or Page Container element.
In the present embodiment, in the case where data sequence change or Page Container element size change, automatic trigger pie
Figure repaints, that is, removes original cake chart, and cake is re-started according to new configuration item object and Page Container element size
The drafting of shape figure.
With reference to shown in Fig. 2, the embodiment of the invention discloses a kind of rendering method of cake chart, this method includes：
201st, the object for including each configuration item for drawing cake chart is received, and the configuration item is pre-processed；
202nd, according to the size of Page Container element, the saleable vector graphics canvas element for being used for drawing cake chart is set
Size；
203rd, according to the size of the saleable vector graphics canvas element of setting, newly-built one can stretch in Page Container element
Contracting vector graphics canvas element；
204th, according to the background colour set in configuration item, pie is drawn in current saleable vector graphics canvas element
The background of figure；
205th, the data series in configuration item, draw profile of the cake chart including level and each section size,
And the non-data sequence item in configuration item, draw the auxiliary information of cake chart；
206th, when detecting the change in size of the change of the data sequence in configuration item and/or Page Container element, clearly
Cake chart is repainted except original cake chart, and according to the data sequence after change and/or Page Container element.
The detailed description of each step in the above method is can be found in for the detailed description of each step in this method, herein no longer
Repeat.
With reference to shown in Fig. 3, the embodiment of the invention discloses a kind of presentation device of cake chart, which includes：
Canvas size module 31 is set, for the size according to Page Container element, set be used to drawing cake chart can
The size of scaler vector graphics canvas element；
Newly-built graphic element module 32, for the size of the saleable vector graphics canvas element according to setting, in the page
A saleable vector graphics canvas element is created in Container elements；
Drafting module 33, for according to pretreated configuration item, cake to be drawn with reference to saleable vector graphics canvas element
Shape figure.
Further, drafting module 33 is specifically used for：
According to the background colour set in configuration item, cake chart is drawn in current saleable vector graphics canvas element
Background, and background colour is defaulted as transparent；
Data series in configuration item, draw the profile of cake chart, and the non-data sequence in configuration item
Item, draws the auxiliary information of cake chart.
Further, drafting module 33 also particularly useful for：
According to the structure of data sequence in the object comprising configuration item, the level of cake chart is obtained；
According to the level of cake chart, cake chart is drawn with reference to the non-data sequence item in the object comprising configuration item.
Further, drafting module 33 also particularly useful for：
According to the element in the data sequence of configuration item, the size of each section of calculating cake chart；
According to the size of each section, cake chart is drawn with reference to the saleable vector graphics canvas element.
Further, further include and repaint module 34, be specifically used for：
When detecting the change in size of the change of the data sequence in configuration item and/or Page Container element, remove former
Some cake charts, and cake chart is repainted according to the data sequence after change and/or Page Container element.
It should be noted that the embodiment and beneficial effect of above-mentioned modules can be found in an embodiment
Content, details are not described herein.
The rendering method and device of a kind of cake chart provided in an embodiment of the present invention, can set according to the size of page area
The cake chart suitable for page area size is put, and the level of cake chart can be determined according to the nested situation of data, and root
The cake chart suitable for different pieces of information structure is provided according to level, is improving the same of different screen size and device category user experience
When, the cake chart met under different data format is shown.
In the above embodiment of the present invention, the description to each embodiment all emphasizes particularly on different fields, and does not have in some embodiment
The part of detailed description, may refer to the associated description of other embodiment.
Those of ordinary skill in the art may realize that each exemplary work(described with reference to the embodiments described herein
Can module and method and step, can be realized with the combination of electronic hardware or computer software and electronic hardware.These functions
Performed actually with hardware or software mode, application-specific and design constraint depending on technical solution.Professional technique
Personnel specifically can realize described function to each using distinct methods, but this realization is it is not considered that super
Go out the scope of the present invention.
In embodiment provided by the present invention, it should be understood that disclosed apparatus and method, can pass through others
Mode is realized.For example, device embodiment described above is only schematical, for example, the division of above-mentioned module or unit,
Only a kind of division of logic function, can there is an other dividing mode when actually realizing, such as multiple units or component can be with
With reference to or be desirably integrated into another system, or some features can be ignored, or not perform.It is another, it is shown or discussed
Mutual coupling or direct-coupling or communication connection can be by some interfaces, the INDIRECT COUPLING of device or unit or
Communication connection, can be electrical, machinery or other forms.
The above-mentioned unit illustrated as separating component may or may not be physically separate, be shown as unit
The component shown may or may not be physical location, you can with positioned at a place, or can also be distributed to multiple
In network unit.Some or all of unit therein can be selected to realize the mesh of this embodiment scheme according to the actual needs
's.
If above-mentioned integrated unit is realized in the form of SFU software functional unit and is used as independent production marketing or use
When, it can be stored in a computer read/write memory medium.Based on such understanding, the present invention realizes above-described embodiment side
All or part of flow in method, can also instruct relevant hardware to complete, above-mentioned computer by computer program
Program can be stored in a computer-readable recording medium, and the computer program is when being executed by processor, it can be achieved that above-mentioned each
The step of a embodiment of the method.Wherein, above computer program includes computer program code, and above computer program code can
Think source code form, object identification code form, executable file or some intermediate forms etc..Above computer readable storage medium storing program for executing
It can include：Any entity or device, recording medium, USB flash disk, mobile hard disk, the magnetic of above computer program code can be carried
Dish, CD, computer storage, read-only storage (ROM, Read-Only Memory), random access memory (RAM,
Random Access Memory), electric carrier signal, telecommunication signal and software distribution medium etc..It is it should be noted that above-mentioned
It is appropriate that the content that computer-readable recording medium includes can be carried out according to legislation in jurisdiction and the requirement of patent practice
Increase and decrease, such as in some jurisdictions, according to legislation and patent practice, computer-readable recording medium does not include electric carrier wave
Signal and telecommunication signal.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all the present invention spirit and
Within principle, any modification, equivalent replacement, improvement and so on, should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of rendering method of cake chart, it is characterised in that comprise the following steps：
According to the size of Page Container element, setting is used for the size for drawing the saleable vector graphics canvas element of cake chart；
According to the size of the saleable vector graphics canvas element of setting, a scalable polar plot is created in Page Container element
Shape canvas element；
According to pretreated configuration item, cake chart is drawn with reference to the saleable vector graphics canvas element.
2. the rendering method of a kind of cake chart according to claim 1, it is characterised in that described to be matched somebody with somebody according to pretreated
Item is put, is specially with reference to the step of saleable vector graphics canvas element drafting cake chart：
According to the structure of data sequence in the object comprising configuration item, the level of cake chart is obtained；
According to the level of the cake chart, cake chart is drawn with reference to the non-data sequence item in the object comprising configuration item.
A kind of 3. rendering method of cake chart according to claim 1 or 2, it is characterised in that the pre- place of the configuration item
Reason process includes：
The incoming object for including each configuration item of cake chart is replicated, to generate an object copy；
Configuration item in the object copies is converted into array；
The configuration item of transformed array form and the object comprising configuration item default value are merged, obtained pretreated
Configuration item.
4. a kind of cake chart rendering method according to claim 1, it is characterised in that described according to Page Container element
The step of size, the size for setting the saleable vector graphics canvas element for being used for drawing cake chart, includes：
Before setting is used to draw the size of saleable vector graphics canvas element of cake chart, if current page Container elements
In comprising the saleable vector graphics canvas element of cake chart created, then stretching the cake chart created
Contracting vector graphics canvas element is removed.
A kind of 5. cake chart rendering method according to claim 1, it is characterised in that according to pretreated configuration item,
It is specially with reference to the step of saleable vector graphics canvas element drafting cake chart：
According to the background colour set in configuration item, the back of the body of drafting cake chart in current saleable vector graphics canvas element
Scape, and background colour is defaulted as transparent；
Data series in configuration item, draw the profile of cake chart, and the non-data sequence item in configuration item, paint
The auxiliary information of cake chart processed.
A kind of 6. rendering method of cake chart according to claim 5, it is characterised in that the auxiliary information of the cake chart
Title including cake chart, the legend of cake chart, the prompting frame of cake chart, the display field of cake chart.
7. according to a kind of rendering method of cake chart in claim 2, it is characterised in that described according to pretreated configuration
, further included with reference to the step of saleable vector graphics canvas element drafting cake chart：
According to the element in the data sequence of configuration item, the size of each section of calculating cake chart；
According to the size of each section, cake chart is drawn with reference to the saleable vector graphics canvas element.
8. according to a kind of rendering method of cake chart in claim 1, it is characterised in that described according to pretreated configuration
, further included afterwards with reference to the step of saleable vector graphics canvas element drafting cake chart：
When detecting the change in size of the change of the data sequence in configuration item and/or Page Container element, remove original
Cake chart, and cake chart is repainted according to the data sequence after change and/or Page Container element.
A kind of 9. presentation device of cake chart, it is characterised in that including：
Canvas size module is set, for the size according to Page Container element, the scalable arrow for being used for drawing cake chart is set
The size of spirogram shape canvas element；
Newly-built graphic element module, for the size of the saleable vector graphics canvas element according to setting, in Page Container member
A saleable vector graphics canvas element is created in element；
Drafting module, for according to pretreated configuration item, pie to be drawn with reference to the saleable vector graphics canvas element
Figure.
10. the presentation device of a kind of cake chart according to claim 9, it is characterised in that the drafting module is specifically used
In：
According to the structure of data sequence in the object comprising configuration item, the level of cake chart is obtained；
According to the level of the cake chart, cake chart is drawn with reference to the non-data sequence item in the object comprising configuration item.
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