DataPlot::GetColormap

Description

Gets the colormap properties of the dataplot (applies to dataplot with colormaps, like contour plot).


Gets the z-levels for of colormap of the dataplot (applies to dataplot with colormaps, like contour plot).

Syntax

BOOL GetColormap( TreeNode & trColormap )

BOOL GetColormap( vector<double> & vz, BOOL & bLogScale )

Parameters

trColormap
[Output] A TreeNode object with the Tree structure of GetColormap

vz
[Output] A Vector of Doubles giving the Z-level values
bLogScale
[Output] bLogScale, TRUE means Logarithmic, FALSE for linear

Return

The BOOL returned is TRUE for success and FALSE for failure.


The BOOL returned is TRUE for success and FALSE for failure.

Examples

EX1

//Get the colormap tree of the contour graph.
void DataPlot_GetColormap_ex1()
{
    MatrixLayer mlayer=Project.ActiveLayer();
    MatrixObject mobj = mlayer.MatrixObjects();
 
    LPCSTR lpcszTemplate="contour";
 
    GraphPage gp;
    string strTemp;
    gp.Create(lpcszTemplate, CREATE_HIDDEN);
 
    GraphLayer glay = gp.Layers();
    int nPlot = glay.AddPlot(mobj, IDM_PLOT_CONTOUR);
    glay.Rescale();
    gp.SetShow();
 
    if(!glay) 
        return;
 
    DataPlot dp = glay.DataPlots(0); 
    vector vZs;
    BOOL bLogScale = FALSE;
    BOOL bRet = dp.GetColormap(vZs, bLogScale);
    Tree tr;
    BOOL bRetT = dp.GetColormap(tr);
    if(bRetT)
        out_str("get colormap success!");
}

EX2

//Clear the contour line of the contour graph.
void DataPlot_GetColormap_ex2()
{
    MatrixLayer mlayer=Project.ActiveLayer();
    MatrixObject mobj = mlayer.MatrixObjects();
 
    LPCSTR lpcszTemplate="contour";
 
    GraphPage gp;
    string strTemp;
    gp.Create(lpcszTemplate, CREATE_HIDDEN);
 
    GraphLayer glay = gp.Layers();
    int nPlot = glay.AddPlot(mobj, IDM_PLOT_CONTOUR);
    glay.Rescale();
    gp.SetShow();            
    if(!glay)
        return;
 
    DataPlot dp = glay.DataPlots(0); 
    if(!dp.IsValid()) 
        return ;
 
    int  nShow = 0;
 
    TreeNode tr;
    dp.GetColormap(tr);
    vector<int> vLShow;
    vLShow = tr.Details.ShowLines.nVals;
    vLShow = nShow;
    tr.Details.Remove();
    tr.Details.ShowLines.nVals  =vLShow;
    dp.SetColormap(tr);
    return;
}

Remark

See Also

DataPlot::SetColormap

header to Include

origin.h