Change the alignment and font size of edgelabels
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Deepa Maheshvare
am 4 Feb. 2020
Beantwortet: Christine Tobler
am 4 Feb. 2020
Hi,
For example, if Ihave the following graph
s = [1 1 1 2 2 3 3 4 4 5 6 7];
t = [2 3 4 5 6 5 7 6 7 8 8 8];
G = digraph(s,t)
eLabels = {'x' 'y' 'z' 'y' 'z' 'x' 'z' 'x' 'y' 'z' 'y' 'x'};
nLabels = {'{0}','{x}','{y}','{z}','{x,y}','{x,z}','{y,z}','{x,y,z}'};
plot(G,'Layout','force','EdgeLabel',eLabels,'NodeLabel',nLabels)
How to change the alignment of the edge labels? Say, from horizontal to vertical and I'd also like to know how to increase the font size of edge labels.
Any suggestions ?
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Christine Tobler
am 4 Feb. 2020
The edge labels provided with the plot of a graph can't be modified in terms of their alignment. However, you can add standard text elements, which have more options, in the middle of each edge:
s = [1 1 1 2 2 3 3 4 4 5 6 7];
t = [2 3 4 5 6 5 7 6 7 8 8 8];
G = digraph(s,t);
eLabels = {'textx' 'texty' 'textz' 'texty' 'textz' 'textx' 'textz' 'textx' 'texty' 'textz' 'texty' 'textx'};
nLabels = {'{0}','{x}','{y}','{z}','{x,y}','{x,z}','{y,z}','{x,y,z}'};
h=plot(G,'Layout','force');
[sSorted, tSorted] = findedge(G);
midEdgeX = (h.XData(sSorted) + h.XData(tSorted))/2;
midEdgeY = (h.YData(sSorted) + h.YData(tSorted))/2;
edgelabel = [];
for ii=1:length(eLabels)
[sii, tii] = findedge(G, ii);
edgelabel(ii) = text(midEdgeX(ii), midEdgeY(ii), eLabels(ii), 'HorizontalAlignment', 'right');
end
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fred ssemwogerere
am 4 Feb. 2020
Bearbeitet: fred ssemwogerere
am 4 Feb. 2020
Hello, I think something like this can work nicely:
% Edit the last line of your code to:
h=plot(G,'Layout','force');
h.EdgeLabel=eLabels;
h.NodeLabel=nLabels;
% To change the Edge label font size;
h.EdgeFontSize=12; % '12' is an arbitrary choice here
% To get a list of any other properties of the object you would like to change, just type the name of the object handle, i.e. "h" (my arbitrary variable), in the command prompt.
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fred ssemwogerere
am 4 Feb. 2020
Hello, unfortunately, i think there is no option for changing the alignment of labels along the edges of a digraph.
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