CN100407211C - Method for automatic obtaining engineering parameter values of sampling points in graph by using computer - Google Patents
Method for automatic obtaining engineering parameter values of sampling points in graph by using computer Download PDFInfo
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- CN100407211C CN100407211C CN2004100941177A CN200410094117A CN100407211C CN 100407211 C CN100407211 C CN 100407211C CN 2004100941177 A CN2004100941177 A CN 2004100941177A CN 200410094117 A CN200410094117 A CN 200410094117A CN 100407211 C CN100407211 C CN 100407211C
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Abstract
The present invention provides a method for automatically obtaining engineering parameter values of sampling points in a graph by a computer. The engineering parameter values of the sampling points in the graph are obtained by converting and calculating a coordinate system. The method comprises the following steps that: the graph or a curve to be processed is led into a computer graph container, the position of an origin of coordinates of a user coordinate system where the graph exists is obtained, and the position is in a window body; according to the position relation of each sampling point in the graph in the user coordinate system, corresponding positions in the window body are determined one by one; the corresponding relation of each sampling point in a systemical coordinate system is obtained, and the distance between two adjacent sampling points is calculated and is used as the unit amount of the coordinate transform of the systemical coordinate system and the user coordinate system; a cursor is moved, and then the value following the cursor is generated; the corresponding engineering parameter value of each sampling point is obtained by the unit amount of the coordinate transform. In the method, the engineering parameter values of the sampling points in the graph and the curve can be visually gotten; especially, the engineering parameter values of the sampling points in experience graphs can be accurately and effectively gotten.
Description
Technical field
The present invention relates to a kind of method of utilizing computing machine to carry out graphics process, particularly relate to a kind of mouse that in figure, carries out and follow the tracks of, and obtain the method for sampled point engineering parameter value according to the coordinate of current cursor.
Background technology
The engineering field exists a large amount of plates in calculating now, these plates are presented as the various curves in the coordinate system mostly, generally, these plates are by carrying out the described point drafting by hand or by plotting machine, the obtaining value method of this moment is the result who obtains by mathematical computations, promptly to seek out the engineering parameter values of each point on the curve, must be by setting up very complicated mathematical model, the position of putting on the binding curve then, instead push calculation, can obtain this and put pairing practical project parameter value.Mathematical model establishing method commonly used at present has usually: 1) computing formula method; 2) use the respective formula simulation curve, use least square polynomial fit etc.; 3) interpolation method, Lagrange's interpolation and 4) numerical integrating etc.Because these computational tools need carry out a large amount of mathematical computations, thereby it can not obtain engineering parameter according to curvilinear figure intuitively.
Particularly in petroleum industry, the relevant theory of choosing submersible electric pump is day by day ripe, but its practical experience is very important, often some versions will appear in industry standard, and the just part of the mathematical model that can sum up out, some is the formed curvilinear figure of valuable data that long-term practice draws, approved through long-term use by industry, because it does not have mathematical model to quote, therefore, present all obtaining value methods all can not be realized the engineering parameter value of each sampled point on above-mentioned experience figure or the curve very intuitively.
If only figure or curve are directly measured with computing machine, often can only obtain the coordinate figure that the pairing computer system of each point is provided in this figure or the curve, this is not the conceivable sampled point engineering parameter of user.In complicated coordinate system such as the comparatively complicated multi-coordinate of certain situation, logarithmic coordinate, the pairing engineering parameter values of each point on figure or the curve wherein especially can't be from measuring this position coordinate system intuitively.
So the present invention proposes a kind of method of utilizing computing machine from figure, to obtain the sampled point engineering parameter values automatically, well solved the problems of value of the corresponding engineering parameter of figure sampled point under the situation of quoting of the standard that does not have mathematical model in the industry.
Summary of the invention
The objective of the invention is to overcome the defective of above-mentioned prior art, and provide a kind of method of utilizing computing machine from figure, to obtain the sampled point engineering parameter values automatically, utilize the numerical transformation of system coordinate system and user coordinate system, combined mouse is followed the tracks of, the pairing engineering parameter values of each point in engineering pattern or the curve is carried out automatically, obtained intuitively to the method for coordinate value.
The present invention proposes a kind of method of utilizing computing machine to obtain the sampled point engineering parameter values automatically from figure, and by obtaining the engineering parameter values of sampled point in the figure to the conversion and the calculating of coordinate system, this method may further comprise the steps:
Pending figure or curve are introduced in the computer graphical container, obtained the position of user coordinate system true origin in forms, figure place;
According to the position relation of each sampled point in the figure in user coordinate system, determine its relative position in forms one by one;
Obtain each sampled point each other relativeness in system coordinate system, calculate the distance of neighbouring sample point in twos, and as the coordinate transform unit quantity of system coordinate system and user coordinate system; And
Moving cursor generates the numerical value of following cursor, utilizes above-mentioned change of scale amount, obtains the pairing engineering parameter numerical value of each sampled point.
Compared with prior art, programmed method of the present invention is simple, is easy to realize; And computational accuracy also can satisfy the requirement identical with engineering calculation; Can from graph curve, carry out sampled point engineering parameter value more intuitively,, more can reach accurate and effective, easily operation particularly for the sampled point engineering parameter value of experience figure.
Be elaborated below in conjunction with embodiment and with reference to the technical scheme of accompanying drawing to this invention.
Description of drawings
Fig. 1 obtains the overall flow figure of the method for sampled point engineering parameter values automatically for the present invention utilizes computing machine from figure.
Fig. 2 is the curve synoptic diagram in the embodiment of the invention one medium value coordinate axis.
Fig. 3 is the curve synoptic diagram in the logarithmic coordinate axle in the embodiment of the invention two.
Embodiment
Coordinate system is each graphic operation (comprises and adjust size, move and draw), all will use the coordinate system of draw district or container.Though the graphical effect that can hit pay dirk with coordinate system, yet, how with coordinate system definition forms and the position of control in application program, also be very important.Coordinate system is a two-dimensional grid, the position of (as: picture box or Printer object) on the definable screen, in the forms or in other container.Use the coordinate in the forms, the position on the definable grid: (x, y) the x value is the position along x axle point, high order end is a default position 0.The y value is the position along y axle point, is default position 0 topmost.The response mouse event can make application program respond to the variation of mouse position and state by MouseDown, MouseMove incident.Most of controls can be discerned these mouse events.Dynamic link library (DLL) then is used for loading and being linked to the routine library of application program when program run.
Utilized these two notions of system coordinate system and user coordinates among the present invention, wherein system coordinate system is meant the conventional coordinates that programmer is set up as required in computer system, and it is similar to absolute coordinate system; User coordinate system then refers to the coordinate system when the figure of pre-treatment or the place of curve own, and it is similar to relative coordinate system.
Overall flow of the present invention as shown in Figure 1, at first, pending figure or curve are introduced in the computer graphical container, obtained the position of user coordinate system true origin in forms, figure place, can determine the relativeness between user coordinate system and the system coordinate system thus, step (101); According to the position relation of each sampled point in the figure in user coordinate system, determine its relative position in forms one by one, promptly determine each actual sampled point position in system coordinate system in the user coordinate system, step 102; Obtain each sampled point each other relativeness in system coordinate system, calculate the distance of neighbouring sample point in twos, and as the coordinate transform unit quantity of system coordinate system and user coordinate system, step 103; Moving cursor generates the numerical value of following cursor, utilizes above-mentioned change of scale amount, by self-defining function CaclX and CaclY, calculates the pairing engineering parameter numerical value of each sampled point, step 104.
In the step of above-mentioned flow process (101), draw if figure is a paper, needing is the vector quantization figure that computing machine can be discerned and operate with this paper graphics process in advance.
In the step of above-mentioned flow process (103), this coordinate transform unit quantity is defined as an intermediate variable, is called by self-defining function.
In the step of above-mentioned flow process (104), also may comprise and utilize computing machine setting-out module, depict the track that mouse moves between each sampled point, utilize the Mousedown incident to choose current cursor, then, utilize the MouseUp incident to determine current cursor position, thereby obtain coordinate figure with respect to system coordinate system.
All application programs of above-mentioned flow process can be registered dynamic link library as required in operating system, set up the object of the generic module of dynamic base, so that call this application program easily, finish obtaining of sampled point engineering parameter values.
Specific (special) requirements for the multi-coordinate curve plotting, the present invention proposes to set up the multiaxis coordinate system, for other axle except that x, y axle, according to the transformational relation (for example slope) of correspondence, calculate net result, finally form the coordinate system of multiaxis and the scheme of one group of a plurality of rreturn value.
Specify realization flow of the present invention below by three specific embodiments:
As shown in Figure 2, what the specific embodiment of the invention one will be carried out the processing of sampled point value is pressure loss curve map, and the user coordinates at this curve map place is the sampled point value of the figure of equivalent coordinate, wherein:
The computing method of unit quantity are
The X-axis unit quantity=(coordinate figure-user coordinates of X-axis maximal value in system coordinates of user coordinates
The axle X coordinate figure of round dot value in system coordinates)/the peaked physical quantity of axle of user coordinates
For example: GB/T 17386-1998
xp＝(7440-825)/305
CaclX=(the X coordinate figure of axle round dot value in system coordinates of the X coordinate figure-user coordinates of current cursor in system coordinates)/X-axis unit quantity
For example: CaclX=(xx-825)/xp
The Y-axis unit quantity=(coordinate figure-user coordinates of Y-axis maximal value in system coordinates of user coordinates
The axle Y coordinate figure of round dot value in system coordinates)/the peaked physical quantity of axle of user coordinates
For example: GB/T 17386-1998
yp＝(9840-405)/1590
CaclY=(the Y coordinate figure of axle round dot value in system coordinates of the Y coordinate figure-user coordinates of current cursor in system coordinates)/Y-axis unit quantity
For example: CaclY=1590-(yy-405)/yp
As shown in Figure 3, what the specific embodiment of the invention two will be carried out the processing of sampled point value is the viscosity profile of no gas crude oil under the temperature conditions of oil field, the user coordinates at this curve map place is logarithmic coordinate systems, at first, judge the position of cursor in user coordinate system, take out the coordinate figure of current cursor between certain two sampled point;
Then, according to the formula calculated value
CaclY=(absolute value of the physics difference of the value that physical values is big in the sampled point-(coordinate figure-bigger sampled point the coordinate figure in system coordinate system of current cursor in system coordinates)/(absolute value of the difference of the coordinate figure of two sampled points in system coordinate system)/two sampled points)
For example: GB/T 17386-1998 (as shown in Figure 3)
Adopt some y01, y02, y03, y04, y05, y06, y08, y10, y20, y30, y40, y50, y60, y80, y100, y200, y300, y400, y500, y600, y800, y1000, y2000, y3000, y4000
(mantissa is the physical values of sampled point)
Sample point coordinate value y01=8955:y02=8415:y03=8115:y04=7980:y05=7725:y06=7515:y0 8=7260 y1=7185:y2=6645:y3=6360:y4=6150:y5=5905:y6=5835:y8=5610: y10=5430 y20=4875:y30=4620:y40=4395:y50=4215:y60=4065:y80=3870 y100=3675:y200=3150:y300=2865:y400=2640:y500=2475:y600=2 325:y800=2100 y1000=1905:y2000=1605:y3000=1215:y4000=870
If?yy＜y4000?Then
CaclY＝″″
ElseIf?yy＜y3000?Then
CaclY＝Int(4000-(yy-y4000)/((y3000-y4000)/1000))
ElseIf?yy＜y2000?Then
CaclY＝Int(3000-(yy-y3000)/((y2000-y3000)/1000))
ElseIf?yy＜y1000?Then
CaclY＝Int(2000-(yy-y2000)/((y1000-y2000)/1000))
ElseIf?yy＜y800?Then
CaclY＝Int(1000-(yy-y1000)/((y800-y1000)/200))
ElseIf?yy＜y600?Then
CaclY＝Int(800-(yy-y800)/((y600-y800)/200))
ElseIf?yy＜y500?Then
CaclY＝Int(600-(yy-y600)/((y500-y600)/100))
ElseIf?yy＜y400?Then
CaclY＝Int(500-(yy-y500)/((y400-y500)/100))
ElseIf?yy＜y300?Then
CaclY＝Int(400-(yy-y400)/((y300-y400)/100))
ElseIf?yy＜y200?Then
CaclY＝Int(300-(yy-y300)/((y200-y300)/100))
ElseIf?yy＜y100?Then
CaclY＝Int(200-(yy-y200)/((y100-y200)/100))
ElseIf?yy＜y80?Then
CaclY＝Int(100-(yy-y100)/((y80-y100)/20))
ElseIf?yy＜y60?Then
CaclY＝Int(80-(yy-y80)/((y60-y80)/20))
ElseIf?yy＜y50?Then
CaclY＝Int(60-(yy-y60)/((y50-y60)/10))
ElseIf?yy＜y40?Then
CaclY＝Int(50-(yy-y50)/((y40-y50)/10))
ElseIf?yy＜y30?Then
CaclY＝Int(40-(yy-y40)/((y30-y40)/10))
ElseIf?yy＜y20?Then
CaclY＝Int(30-(yy-y30)/((y20-y30)/10))
ElseIf?yy＜y10?Then
CaclY＝Int(20-(yy-y20)/((y10-y20)/10))
ElseIf?yy＜y8?Then
CaclY＝10-(yy-y10)/((y8-y10)/2)
ElseIf?yy＜y6?Then
CaclY＝8-(yy-y8)/((y6-y8)/2)
ElseIf?yy＜y5?Then
CaclY＝6-(yy-y6)/(y5-y6)
ElseIf?yy＜y4?Then
CaclY＝5-(yy-y5)/(y4-y5)
ElseIf?yy＜y3?Then
CaclY＝4-(yy-y4)/(y3-y4)
ElseIf?yy＜y2?Then
CaclY＝3-(yy-y3)/(y2-y3)
ElseIf?yy＜y1?Then
CaclY＝2-(yy-y2)/(y1-y2)
ElseIf?yy＜y08?Then
CaclY＝1-(yy-y1)/((y08-y1)/0.2)
ElseIf?yy＜y06?Then
CaclY＝0.8-(yy-y08)/((y06-y08)/0.2)
ElseIf?yy＜y05?Then
CaclY＝0.6-(yy-y06)/((y05-y06)/0.1)
ElseIf?yy＜y04?Then
CaclY＝0.5-(yy-y05)/((y04-y05)/0.1)
ElseIf?yy＜y03?Then
CaclY＝0.4-(yy-y04)/((y03-y04)/0.1)
ElseIf?yy＜y02?Then
CaclY＝0.3-(yy-y03)/((y02-y03)/0.1)
ElseIf?yy＜y01?Then
CaclY＝0.2-(yy-y02)/((y01-y02)/0.1)
Else
CaclY＝0
End?If
What the specific embodiment of the invention three will carry out that the sampled point value handles is the multi-coordinate figure of band slope, and the value that the implementation method difference of multi-coordinate is to bring into calculating is that promptly slope is adjusted through transformation relation, wherein:
Slope is adjusted formula:
Adjusted Y numerical value=slope * (x coordinate figure-current cursor the x coordinate figure in system coordinates of axle round dot value in system coordinates of the user coordinates)+Y coordinate figure of current cursor in system coordinates
For example: y2=(450/2490) * (1080-X)+Y
Call Cacly (y2)
Above content only is embodiments of the invention, and its purpose is limited device proposed by the invention, and protection scope of the present invention is as the criterion with claim.Under the situation that does not break away from the spirit and scope of the present invention; those skilled in the art all drop within protection scope of the present invention its all conspicuous modification or variation about form and details of carrying out under the situation that does not depart from scope and spirit of the present invention.
Claims (6)
1. a method of utilizing computing machine to obtain the sampled point engineering parameter values automatically from figure by conversion and the calculating to coordinate system, is obtained the engineering parameter values of sampled point in the figure, and this method may further comprise the steps:
Pending figure or curve are introduced in the computer graphical container, obtained the position of user coordinate system true origin in forms, figure place;
According to the position relation of each sampled point in the figure in user coordinate system, determine its relative position in forms one by one;
Obtain each sampled point each other relativeness in system coordinate system, calculate the distance of neighbouring sample point in twos, and as the coordinate transform unit quantity of system coordinate system and user coordinate system; And
Moving cursor obtains the numerical value of current cursor to each sampled point that needs to obtain engineering parameter values, utilizes above-mentioned change of scale amount, calculates the pairing engineering parameter values of each sampled point.
2. the method for utilizing computing machine to obtain the sampled point engineering parameter values automatically from figure as claimed in claim 1 is characterized in that, when curve need be plotted in multi-coordinate, this method also comprised following treatment step:
Set up the multiple axes system coordinate system;
Other axle for except that x, y axle calculates transformational relation according to the relation of correspondence;
Form coordinate system and one group of a plurality of rreturn value of multiaxis.
3. the method for utilizing computing machine to obtain the sampled point engineering parameter values automatically from figure as claimed in claim 1 is characterized in that, when described figure is the paper drawing, is the vector quantization figure that computing machine can be discerned and operate with this paper graphics process earlier.
4. the method for utilizing computing machine to obtain the sampled point engineering parameter values automatically from figure as claimed in claim 1 is characterized in that described coordinate transform unit quantity is an intermediate variable, is called by self-defining function.
5. the method for utilizing computing machine to obtain the sampled point engineering parameter values automatically from figure as claimed in claim 1 is characterized in that described figure or curve are in the equivalent coordinate system, and its value computation process is:
The peaked physical quantity of X-axis of X-axis unit quantity=(the X coordinate figure of axle round dot value in system coordinates of the coordinate figure-user coordinates of X-axis maximal value in system coordinates of user coordinates)/user coordinates;
X-axis self-defining function=(the X coordinate figure of axle round dot value in system coordinates of the X coordinate figure-user coordinates of current cursor in system coordinates)/X-axis unit quantity;
The peaked physical quantity of Y-axis of Y-axis unit quantity=(the Y coordinate figure of axle round dot value in system coordinates of the coordinate figure-user coordinates of Y-axis maximal value in system coordinates of user coordinates)/user coordinates;
Y-axis self-defining function=(the Y coordinate figure of axle round dot value in system coordinates of the Y coordinate figure-user coordinates of current cursor in system coordinates)/Y-axis unit quantity.
6. the method for utilizing computing machine to obtain the sampled point engineering parameter values automatically from figure as claimed in claim 2 is characterized in that described transformational relation is a slope.
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100476350C (en) * | 2007-10-17 | 2009-04-08 | 南京大学 | Automatic positioning method for global coordinate system under multiple-association engineering chart environment |
| CN100476349C (en) * | 2007-10-17 | 2009-04-08 | 南京大学 | Automatic calculation method for global coordinate system under multiple-association engineering chart environment |
| CN101634914B (en) * | 2008-07-22 | 2011-08-10 | 福州星网视易信息系统有限公司 | Three-point calibration method based on nonuniform touch screen |
| CN101567694B (en) * | 2009-04-30 | 2012-04-18 | 钱宇 | Multilevel data sampling method based on connected subgraph |
| CN102622722A (en) * | 2012-01-10 | 2012-08-01 | 中联重科股份有限公司 | Engine characteristic curve converting method and engine characteristic curve converting device |
| CN102879471B (en) * | 2012-09-21 | 2014-08-20 | 何鲜峰 | Structural tomography method based on chart control |
| CN102938009A (en) * | 2012-11-23 | 2013-02-20 | 北京汽车股份有限公司 | Automobile body main section parameter computation method and device |
| CN104866684A (en) * | 2015-06-05 | 2015-08-26 | 邹三 | Coordinate-parameter transmission rapid drawing method |
| CN114647765A (en) * | 2022-05-19 | 2022-06-21 | 支付宝(杭州)信息技术有限公司 | Graph data sampling method and system |
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