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wilsonthongwk
Hong Kong
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 Posted - 05/22/2007 : 12:33:47 AM
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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. |
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Many questions about 3D plots
