MATLAB: Unusual arrangement of plot

plotplotting

Red line is plotted by matlab but it is unusal and expected to be blue line.

Any idea why this happens?

plot(celltracker_group_prolif.radius(celltracker_group_prolif.time==22),celltracker_group_prolif.perhex(celltracker_group_prolif.time==22),'-rs','LineWidth',2,…

'MarkerEdgeColor','k',…

'MarkerFaceColor','g',…

'MarkerSize',5)

Best Answer

I assume when you say "Red line is plotted by matlab but it is unusal and expected to be blue line" you mean that you expect the red line to be close to the blue line.

It looks like your data is probably not sorted in order of increasing x value.

You can use the sort command to sort your data. So if your values were in a vector y, and your x values were in a vector x you could sort them according to their x values using

[xsort,isrt] = sort(x)
ysort = y(isrt)

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MATLAB: Color Different Scatter Points Based on Group

[unique_groups, ~, group_idx] = unique(Your_Group_Labels);
num_groups = size(unique_groups, 1);
if isnumeric(unique_groups)
   group_names = cellstr( num2str( unique_groups ) );
elseif ischar(unique_groups)
  group_names = mat2cell( unique_groups, ones(1, num_groups), size(unique_groups, 2) );
elseif iscell(unique_groups)
  group_names = unique_groups;
else
  error('I do not know how to convert group labels of class "%s" to printable strings', class(unique_groups));
end
pointsize = 30;
scatter3(x, y, z, pointsize, group_idx);
cmap = jet(num_groups);    %or build a custom color map
colormap( cmap );
legend(group_names);

If only you knew ahead of time what the data class of your labels was going to be, then you could simplify your code...

MATLAB: How to adjust the size of the cross

You could set the line's 'MarkerSize' to be smaller.

h = plot(..)
set(h,'MarkerSize',10);

Best Answer

Related Solutions

MATLAB: Color Different Scatter Points Based on Group

MATLAB: How to adjust the size of the cross

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