MATLAB: How to plot the vector for specified node

vector

I am using following command

 quiver(xarray(1:4:end),yarray(1:4:end),DV_XX(1:4:end),DV_YY(1:4:end),1, 'k','filled');

which is plotting the vector for every node. I want to plot for every alternate node that means it will plot 1st node then do not plot arrow for 2nd node the again plot the arrow for 3 rd node.

Any idea how can I do that?

Best Answer

 XX_t = DV_XX(1:4:end);
 XX_t(2:2:end) = NaN;

and plot with XX_t instead of DV_XX(1:4:end)

Related Solutions

MATLAB: How to avoid to plot the NAN value

Assuming all dimensions match:

XX_t = DV_XX(1:4:end);
XX_t(3:3:end) = NaN;
YY_t =DV_YY(1:4:end);
YY_t(2:3:end) = NaN;

Then:

tempX = xarray(1:4:end);
tempY = yarray(1:4:end);
idx = ~isnan(XX_T) & ~isnan(YY_t);
quiver(tempX(idx),tempY(idx),XX_t(idx),YY_t(idx),'k','filled');

MATLAB: How to Add Legend to Plotted Data

Use something like

LineColors = [...] %n by 3 rgb list
ncolor = size(LineColors, 1);
for k=1:ncolor
  Lh(k) = line(nan, nan, 'color', LineColors(k, :)) ;
end
legend(Lh, {'first label', 'second label'... })

Best Answer

Related Solutions

MATLAB: How to avoid to plot the NAN value

MATLAB: How to Add Legend to Plotted Data

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