Select a multipe lines in a plot and store each lines XData and YData in an array
3 views (last 30 days)
Show older comments
I'm plotting a lot of map data and I want to be able to select multiple lines to create a route by storing the X and Y co-ordinates.
I have found the following function that allows a user to select each line and then make it thicker, etc.
I've tried to modify the second function by adding
Var = num2str(h(1).XData)
but to no avail.
Does anyone know how I can implement this?
function smallTest
axes('NextPlot', 'add')
H(1) = plot(1:10, rand(1, 10), 'r');
H(2) = plot(1:10, rand(1, 10), 'b');
set(H, 'ButtonDownFcn', {@LineSelected, H})
function LineSelected(ObjectH, EventData, H)
set(ObjectH, 'LineWidth', 2.5);
set(H(H ~= ObjectH), 'LineWidth', 0.5);
0 Comments
Answers (1)
KSSV
on 24 Nov 2016
function smallTest
axes('NextPlot', 'add')
H(1) = plot(1:10, rand(1, 10), 'r');
H(2) = plot(1:10, rand(1, 10), 'b');
set(H, 'ButtonDownFcn', {@LineSelected, H})
end
function LineSelected(ObjectH, EventData, H)
set(ObjectH, 'LineWidth', 2.5)
set(H(H ~= ObjectH), 'LineWidth', 0.5) ;
% Get x and y data of the highlighted lines
x = ObjectH.XData
y = ObjectH.YData
end
4 Comments
Adam
on 24 Nov 2016
Use a nested function for the callback and define the variables you want to store into in the main function.
Trang Luu
on 23 Nov 2019
Edited: Trang Luu
on 23 Nov 2019
Sorry can you please explain a bit more?
I was able to add the following lines of code to save my X and Y values to my workspace, but every time I select another line on my plot, the variable would update. I would like the variable to just be added to instead of constantly replaced.
function LineSelected(ObjectH, EventData, H)
set(ObjectH, 'LineWidth', 2.5)
set(H(H ~= ObjectH), 'LineWidth', 0.5) ;
% Get x and y data of the highlighted lines
x = ObjectH.XData
y = ObjectH.YData
assignin('base','XinWorkSpace',x);
assignin('base','YinWorkSpace',y);
end
See Also
Categories
Find more on NaNs in Help Center and File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!