Just like displaying coordinates, I want to display row and column number
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Hi, so I am gonna plot a bunch of different graphs from a 3D matrix and I want to be able to click on the line in the graph and be able to know from which row and column the line comes from. So I tried the following tactic from enable data cursor mode:
function txt = displayCoordinates(~,info)
x = info.Position(1);
y = info.Position(2);
txt = ['(' num2str(x) ', ' num2str(y) ')'];
end
x=1:2;
y(:,:,1)=[1 1 2 3; 1.5 2 2.5 3.5];
y(:,:,2)=[2 3 4 6; 2.5 3 4.5 6.5];
figure(1)
for i=1:2
for j=1:4
plot(x,squeeze(y(i,j,:)))
hold on
dcm = datacursormode;
dcm.Enable = 'on';
%dcm.DisplayStyle = 'window';
dcm.UpdateFcn = @displayCoordinates;
end
end
So the clicking on the line works perfectly fine. The only problem is that I can't seem to implement how to display the row and column instead of the coordinates. So I tried this, but it doesn't work.
function txt = displayCoordinates(~,info)
txt = ['row is ' num2str(i) ', column is' num2str(j)];
end
Does anyone know how I can make this work?
0 Comments
Accepted Answer
Walter Roberson
on 26 Jun 2020
x=1:2;
y(:,:,1)=[1 1 2 3; 1.5 2 2.5 3.5];
y(:,:,2)=[2 3 4 6; 2.5 3 4.5 6.5];
figure(1)
for i=1:2
for j=1:4
plot(x,squeeze(y(i,j,:)), 'UserData', [i j])
hold on
end
end
dcm = datacursormode;
dcm.Enable = 'on';
%dcm.DisplayStyle = 'window';
dcm.UpdateFcn = @displayCoordinates;
function txt = displayCoordinates(hObject,info)
ud = hObject.UserData;
if numel(ud) ~= 2
x = info.Position(1);
y = info.Position(2);
txt = sprintf('(x,y) = (%g, %g)', x, y);
else
txt = sprintf('row is %d, column is %d', ud);
end
end
3 Comments
Walter Roberson
on 26 Jun 2020
x=1:2;
y(:,:,1)=[1 1 2 3; 1.5 2 2.5 3.5];
y(:,:,2)=[2 3 4 6; 2.5 3 4.5 6.5];
figure(1)
for i=1:2
for j=1:4
plot(x,squeeze(y(i,j,:)), 'UserData', [i j])
hold on
end
end
dcm = datacursormode;
dcm.Enable = 'on';
%dcm.DisplayStyle = 'window';
dcm.UpdateFcn = @displayCoordinates;
function txt = displayCoordinates(~,info)
ud = info.Target.UserData;
if numel(ud) ~= 2
x = info.Position(1);
y = info.Position(2);
txt = sprintf('(x,y) = (%g, %g)', x, y);
else
txt = sprintf('row is %d, column is %d', ud);
end
end
More Answers (1)
Takumi
on 26 Jun 2020
Edited: Takumi
on 26 Jun 2020
"info" has two fields and one of fields that named "Target" has line data.
So I atempted to use the find function to find an index that matches the data in the "Target" and the "Position".
x=1:2;
y(:,:,1)=[1 1 2 3; 1.5 2 2.5 3.5];
y(:,:,2)=[2 3 4 6; 2.5 3 4.5 6.5];
figure(1)
for i=1:2
for j=1:4
plot(x,squeeze(y(i,j,:)))
hold on
dcm = datacursormode;
dcm.Enable = 'on';
%dcm.DisplayStyle = 'window';
dcm.UpdateFcn = @displayCoordinates;
end
end
function txt = displayCoordinates(~,info)
x = info.Position(1);
y = info.Position(2);
i = find(info.Target.XData==x);
j = find(info.Target.YData==y);
txt = ['row is ' num2str(i) ', column is' num2str(j)];
end
But this method is not robust...
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