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Diffstat (limited to 'sourcecodes/bnt-master/KPMtools/plot_matrix.m')
| -rw-r--r-- | sourcecodes/bnt-master/KPMtools/plot_matrix.m | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/sourcecodes/bnt-master/KPMtools/plot_matrix.m b/sourcecodes/bnt-master/KPMtools/plot_matrix.m new file mode 100644 index 00000000..58a9a964 --- /dev/null +++ b/sourcecodes/bnt-master/KPMtools/plot_matrix.m @@ -0,0 +1,48 @@ +function plot_matrix(G, bw) +% PLOT_MATRIX Plot a 2D matrix as a grayscale image, and label the axes +% +% plot_matrix(M) +% +% For 0/1 matrices (eg. adjacency matrices), use +% plot_matrix(M,1) + +if nargin < 2, bw = 0; end + +if 0 + imagesc(G) + %image(G) + %colormap([1 1 1; 0 0 0]); % black squares on white background + %colormap(gray) + grid on + n = length(G); + + % shift the grid lines so they don't intersect the squares + set(gca,'xtick',1.5:1:n); + set(gca,'ytick',1.5:1:n); + + % Turn off the confusing labels, which are fractional + % Ideally we could shift the labels to lie between the axis lines... +% set(gca,'xticklabel', []); +% set(gca,'yticklabel', []); +else + % solution provided by Jordan Rosenthal <jr@ece.gatech.edu> + % You can plot the grid lines manually: + % This uses the trick that a point with a value nan does not get plotted. + imagesc(G); + if bw + colormap([1 1 1; 0 0 0]); + end + n = length(G); + x = 1.5:1:n; + x = [ x; x; repmat(nan,1,n-1) ]; + y = [ 0.5 n+0.5 nan ].'; + y = repmat(y,1,n-1); + x = x(:); + y = y(:); + line(x,y,'linestyle',':','color','k'); + line(y,x,'linestyle',':','color','k'); + set(gca,'xtick',1:n) + set(gca,'ytick',1:n) +end + + |