2.2.4.8.7 DataPlot::GetColormap

GetColormap

1 Description
2 Syntax
3 Parameters
4 Return
5 Examples
6 Remark
7 See Also
8 Header to Include

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.

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;
}