INTRO:
I want to plot z as color dots of each x,y-coordinate-pair. Assume the array is given as in the example below:
xvector = 5:5:100;yvector = 5:5:75;numX = numel(xvector); numY = numel(yvector);yvector = repmat(yvector(:),numX,1);xvector = repmat(xvector ,numY,1);COORDINATES= [xvector(:) yvector];VALUE=(1:1:numX*numY)';T=[COORDINATES VALUE];[ux, ~, bx] = unique(T(:,1));[uy, ~, by] = unique(T(:,2));[X, Y] = ndgrid(ux, uy);%Z = accumarray( [bx(:),by(:)], T(:,3) );
Z = accumarray( [bx(:),by(:)], T(:,3), [],[], NaN ); %h=pcolor(X,Y,Z);
%h=surf(X,Y,Z);
h=surf(X,Y,zeros(size(X)),Z);Colorbar; axis([90 105 50 80]);set(gca);set(gca,'XTick',90:1:105);set(gca,'YTick',50:1:80);set(gca,'XMinorTick','on');set(gca,'YMinorTick','on');
PROBLEM: It plots a color box everywhere but I want to display only the discrete values, the vacancies should be white or any known color.
I tried different plot commands above (%) but nothing changed the situation. Hope someone knows how to do it correctly. Thanks in advance for your help
Emerson
Best Answer