MATLAB: How to set text properties using clabelm

clabelmfontMATLABproperties

How to set the text and background color properties when using the 'clabelm' function which can be done in the 'clabel' function by mentioning the property names directly as parameters?

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You can control the fontsize, color and background using the 'clabelm' function. The 'clabelm' function works slightly differently than the 'clabel' function with respect to setting these properties.

A small example to understand how to use these properties in regards to 'clabelm', is given below:

>> [C,h] = contourfm(x,y,z); % Create the filled contour and return the contour matrix in 'C' and handle to the contour patches in 'h'

>> htext = clabelm(C,h); % Pass the handle as a parameter to 'clabelm'. This returns an array containing the handles of the text objects created.

>> set(htext,'FontSize',10); % Use various properties to control the various aspects of the text, background etc.

Related Solutions

MATLAB: Specifying color data for patchm or patchesm

The "cdata" parameter of both the "patchm" and "patchesm" constructor expects to receive a singular color value, specified as either a color name (e.g. 'r' or 'red') or an RGB triplet (e.g. [1 0 0]). It will not take in a vector of color values that correspond to the different face colors.

Unlike "patch", providing a scalar value for "cdata" in the constructor for "patchm" or "patchesm" does not use the "CDataMapping" property to map into the colormap.

However, since "patchm" supports nearly all the properties that are supported by the "patch" function, we can color the faces by passing property name/property value pairs to the "patchm" function, as follows:

>> patchm(latData, lonData, 'FaceVertexCData', faceColors, 'FaceColor', 'flat')

This command will create a single patch with multiple faces, with the face colors specified by the array "faceColors". Specifics on the allowed formats of the array "faceColors" can be found on the Patch Properties documentation page, under the property "FaceVertexCData", linked here:

https://www.mathworks.com/help/matlab/ref/matlab.graphics.primitive.patch-properties.html

Since "patchesm" returns an array containing a separate patch object for each face, it is necessary to set the color of each of the patch objects individually to accomplish the same behavior.

For more information about these properties, please refer to the above link.

MATLAB: How to plot a cell referenced map

You can create a "cell referenced" plot by first creating a "GeographicCellsReference" object using the function "georefcells". The code below illustrates this workflow using a built-in MATLAB example:

>>load topo
>>R = georefcells(topolatlim, topolonlim, size(topo));
>>worldmap world
>>setm(gca,'mapprojection','pcarree');
>>S = geoshow(topo, R, 'DisplayType','texturemap');

Note that here, "topolatlim" and "topolonlim" specify the limits of the latitude and the longitude in increasing order (i.e. from South to North and West to East, respectively).

For releases R2015a and earlier, the function "georefcells" is not available. In earlier releases, replace the line of code that calls "georefcells" with

>>R = georasterref('LatLim',topolatlim,'LonLim',topolonlim,'RasterSize',size(topo));

Also note that the built-in example is slightly different in earlier releases, so it is necessary to construct "topolatlim" and "topolonlim" from the data in the MAT file.

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Related Solutions

MATLAB: Specifying color data for patchm or patchesm

MATLAB: How to plot a cell referenced map

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