![]() H.lor=((cm-Zmin)./(Zmax-Zmin)).*(nc-1)+1 //scale color matrix & convert to color number mode>0 the surface is painted with color 'mode' the boundary of the facet is drawn with current line style and color. Zmax=max(max(z1),max(z2)) //Absolut maximum of all data sets Zmin=min(min(z1),min(z2)) //Absolut minimum of all data sets ![]() And as a surface it has the cdata_mapping property, which can be changed from scaled to direct and scale the color matrix (which defines the color of each facet) according to the actual range used: x=-5:0.1:5 Please note, that surf generates a 3D plot, but you can rotate it to seem as a 2D plot. color_flag = 3 // interpolated shading mode.I don't know how to do it with contourf, but if you can use surf instead, I have a suggestion. cdata_mapping = ' direct ' // default is ' scaled ' relative to the colormap e. Z initialisation Z = //simple surface surf ( Z ) // Note that X and Y are determined by Z dimensions //same surface with red face color and blue edges scf ( 2 ) // new figure number 2 surf ( Z, ' facecol ', ' red ', ' edgecol ', ' blu " ) // X and Y initialisation // NB: here, X has the same lines and Y the same columns X = Y = // example 1 scf ( 3 ) surf ( X, Y, Z ) //example 2 // As you can see, the grid is not necessary rectangular scf ( 4 ) X ( 1, 4 ) = - 1.5 Y ( 1, 4 ) = - 3.5 Z ( 1, 4 ) = - 2 surf ( X, Y, Z ) // example 3 // X and Y are vectors = > same behavior as sample 1 // With vectors, the grid is inevitably rectangular scf ( 5 ) // new figure number 5 X = Y = X surf ( X, Y, Z ) //LineSpec and GlobalProperty examples: xdel ( winsid ( ) ) // destroy all existing figures surf ( Z, Z + 5 ) // color array specified e = gce ( ) e. Note that all these properties can be (re-)set through the surfaceĮntity properties (see surface_properties). That you can set multiple properties : the face & edge color,Ĭolor data, color data mapping, marker color (foreground andīackground), the visibility, clipping and thickness of the edges of PropertyValue (which can be a string or an integer or.Īs well depending on the type of the PropertyName). It must always be a couple statement constituted of a stringĭefining the PropertyName, and its associated value This option may be used to specify how all the surfaces areĭrawn. Here is a brief description on how it works: GlobalProperty The GlobalProperty arguments sould be used to customize Here is a complete list of the PropertyName you can specify (using plot or surf) and their available associated PropertyValue. Vertices), the last row and column of C are ignored. zq interp2 (X, Y, Z, xq, yq) but how to get all the x,y on the surf where z is a certain value. ![]() When 'flat' (default mode) is enabled we use a colorįaceted representation (one color per patch). Application Development Computer Vision Control Systems Education Finite Element Modeling Machine Learning Numerical Analysis Openeering Optimization Signal Processing Statistics System Modeling Uncategorized. s surf (X, Y, Z) I know I can use xq, yq, and inter2 to retrieve zq from the surf, like following. Meshgrid for surf If you would like to use surf with ndgrid: surf(x,y,Z. > there is a transposition between these two definitions (see help file) Ndgrid for plot3d, contour. ![]() The problem is that surf uses Matlab definition of the matrix Z whereas plot3d. The color of the vertices defining the patch is set to the given color of If you use plot3d instead of surf, it is ok. The Surface entity is a leaf of the graphics entities hierarchy. we provided only one color per patch) then or we can use a more native function such as param3d (as. A Module of Image Processing and Computer Vision Toolbox for Scilab 6.0 (19559 downloads for this version - 189068 downloads for all versions) Details Version 1.1 A more recent valid version with binaries for Scilab 6.0 exists: 4.1. 'interp' is selected, we perform a bilinear color We can use built-in functions very similar to Matlabs, such as meshgrid, plot3d, surf and others. The FaceColor property sets the shading mode : it canīe 'interp' or 'flat' (default mode). (one color defined per vertex) orĬolor representation also varies when specifying some Matrix, the C color matrix dimension can be The vertices or at the center of each patch. Matrix is given, it can be applied to the patch in two different ways : at Matrices matching the Z matrix dimension (and the grid isĬonsidering the 3 functions x(i,j), y(i,j)Īnd z(i,j), the portion of surface defining between twoīy default, when no color matrix is added to a surf call, the color Y are vectors, they are internally treated to produce good (even if X or Y is vector, see below) and can beĬonsidered as 3 functions x(i,j), y(i,j) and This imaginary rectangular grid is used to build the real surface Let consider two independent variables i and (if triplet is given, Z must be aĪs stated before, the surface is created over a rectangular grid Rectangular grid defined by X and Y coordinates Surf draws a colored parametric surface using a
0 Comments
Leave a Reply. |