Display the Vertex and Triangle labels on the plot

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developer
developer 2011-9-2
Hello, As in 2D data we can label the vertex and triangle through the code : triplot(dt);
%Display the Vertex and Triangle labels on the plot
>>hold on
>>vxlabels = arrayfun(@(n) {sprintf('P%d', n)}, (1:10)');
>>Hpl = text(x, y, vxlabels, 'FontWeight', 'bold', 'HorizontalAlignment',...
'center', 'BackgroundColor', 'none');
>>ic = incenters(dt);
>>numtri = size(dt,1);
>>trilabels = arrayfun(@(x) {sprintf('T%d', x)}, (1:numtri)');
>>Htl = text(ic(:,1), ic(:,2), trilabels, 'FontWeight', 'bold', ...
'HorizontalAlignment', 'center', 'Color', 'blue');
>>hold off
How can i label it for 3d points?

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回答（1 个）

Walter Roberson
Walter Roberson 2011-9-2
text() can take x, y, z coordinates.
  1 个评论
developer
developer 2011-9-5
i modify the above code for x,y and z as:
vxlabels = arrayfun(@(n) {sprintf('P%d', n)}, (1:20)');
Hpl = text(x, y,z, vxlabels, 'FontWeight', 'bold', 'HorizontalAlignment',...
'center', 'BackgroundColor', 'none');
ic = incenters(dt);
numtri = size(dt,1);
trilabels = arrayfun(@(z) {sprintf('T%d',z)}, (1:numtri)');
Htl = text(ic(:,1), ic(:,2), ic(:,3), trilabels, 'FontWeight', 'bold', ...
'HorizontalAlignment', 'center', 'Color', 'blue');
Doing so i am points labelled properly but the triangles are not labeled properly

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