Contour plot in 2D using x,y,z data
1 view (last 30 days)
Show older comments
I have x,y,z datalike this the attached text file. I would like to make a contour plot using this data. I am using the code
Sublat = Summer2015(:,2);
Sublong = Summer2015(:,1);
TECDev = Summer2015(:,3);
contourf(Sublong,Sublat,TECDev);
But there is an error.
Can you please help?
Accepted Answer
Star Strider
on 6 Nov 2021
Try this —
Summer2015 = readtable('https://www.mathworks.com/matlabcentral/answers/uploaded_files/791769/Summer2015.txt', 'VariableNamingRule','preserve')
Sublat = Summer2015{:,2};
Sublong = Summer2015{:,1};
TECDev = Summer2015{:,3};
latv = linspace(min(Sublat), max(Sublat), height(Summer2015));
lonv = linspace(min(Sublong), max(Sublong), height(Summer2015));
[Lam,Lom] = ndgrid(latv,lonv);
TECDevm = griddata(Sublat, Sublong, TECDev, Lam, Lom);
figure
contourf(Lam, Lom, TECDevm)
axis('equal')
There may be Mapping Toolbox functions for this that could be more appropriate. Nevertheless, this illustrates how to create the matrices that contourf wants.
.
0 Comments
More Answers (0)
See Also
Categories
Find more on Contour Plots 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!