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Screensize: 640 x 480 800 x 600 1024 x 768 1280 x 1024 UserName: Password: Anti-Spam Code: Format Mode: Basic  Help  Prompt  Format: Font Andale Mono Arial Arial Black Book Antiqua Century Gothic Comic Sans MS Courier New Georgia Impact Lucida Console Script MT Bold Stencil Tahoma Times New Roman Trebuchet MS Verdana   Size 1 2 3 4 5 6   Color Black Red Yellow Pink Green Orange Purple Blue Beige Brown Teal Navy Maroon LimeGreen Message: * HTML is OFF * Forum Code is ON Smilies [quote][i]Originally posted by wilsonthongwk[/i] [br]Origin Version (Select Help-->About Origin): OriginPro 7.5 SR0 v7.5714(B714) Operating System: Win XP (SP2) Following details refer to "3D - Colormap Surface" plot type. - How to fix the "from" of Z axes? The following solution doesn't work. Double-click the Z axis and go to the "Scale" page. Change "Rescale" to "Fixed From", and set the "From" to whatever I want to. When I press the "Rescale" button or run the GraphLayer::Rescale(), the "From" of the Z axis changes. How can I fix it? - How to set the "from" of Z axes in Origin C? While GraphLayer.X and GraphLayer.Y exist, there is no GraphLayer.Z. How can I customize Z axes, such as its "from"? - How to refresh the colormap? Both refresh button and GraphPage::Refresh() don't work. I use GraphLayer::AddPlot to plot a matrix into a graph template of type "3D - Colormap Surface". Then I use the following codes to change the "Min" and "Max" (i.e. the range) of colormap. // rdSurfLayer is a GraphLayer DataPlot rdSurfDP = rdSurfLayer.DataPlots(0); rdSurfTree = rdSurfDP.Surface; double rdMMaxValue = rdM.GetMax(); rdSurfTree.ColorMap.Min.dVal = 0.5; rdSurfTree.ColorMap.Max.dVal = rdMMaxValue; rdSurfTree.ColorMap.Details.Remove(); rdSurfTree.ColorMap.Count.nVal = 30; // update the plot rdSurfDP.Surface = rdSurfTree; rdSurfLayer.Rescale(); // rdPlot is a GraphPage rdPlot.Refresh(); Though the GraphPage::Refresh() refreshes the surface plot, it doesn't re-render the colormap. I.e., the colormap uses the old "Max" and "Min" values to render. However the new "Max" and "Min" values given by the above codes do indeed saved into the surface plot, as can be verified by the following. Right click the layer-icon of the graph, select "Layer Properties.." to open the "Plot Details" dialog box, expend the "Layer1" and select the dataset, go to "Color Map" on the right, click "Level" and read the "Minimum" and "Maximum". I refresh the colormap manually (instead of by program automatically) as follow. Go to the above "Colo Map" page, click the "Level", click the "OK" of the "Set Levels" dialog box, and then click "OK" of the "Plot Details" dialog box. Is there any class methods or functions that can refresh the colormap? - Where can I find a complete documentation of Origin C? It seems to me that many plotting related class methods, class member variables, and global constants are undocumented in the Help. For example, * the various IDM_PLOT_?? contants, as defined in oPlotDs.h files. They are required for GraphLayer::AddPlot when IDM_PLOT_UNKNOWN is not appropriate. * the overloaded int GraphLayer::AddPlot(MatrixObject& matObj, int nPlotID = IDM_PLOT_MATRIX_IMAGE) class method. * All member variables of classes, such as DataPlot.Surface, DataPlot.Curve, the "dVal" or "nVal" when using Tree to customize plots, etc. Thank you so much for your help. [/quote]   Check here to include your profile signature. Check here to subscribe to this topic.