Matlab's contour and colormap ignores input values

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mldmnn
mldmnn 2018-8-6
评论： Adam Danz 2018-8-6
I'm plotting a contour using the contourf function in Matlab and using sound pressure levels and the associated coordinates as an input. The maximum SPL is over 78 dB. The contourf function somehow is only taking values until 75 dB into account but I need a finer resolution what is covering values until the maximum one. Now all values over 75 dB are in the same color.
% Plotting
figure();
contourf(xObsGnewGrid,yObsGnewGrid,obsSplMaxInterp,'LineColor','none');
axis equal;
clrb = colorbar('eastoutside','Ticks',[0:2:100]);
zlab = get(clrb,'ylabel');
set(zlab,'String','SPL [dBA]');
ylabel('Lateral Position [m]');
xlabel('Longitudinal Position [m]');
xlabel('Longitudinal Position [m]');

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采纳的回答

mldmnn
mldmnn 2018-8-6
An increase of the contour levels worked for me!
  1 个评论
Adam Danz
Adam Danz 2018-8-6
If Jonas' solution worked for you, you should accept that answer, not yours (which is only a comment). That way when people reference this question in the future, they will be pointed to the correct answer.

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更多回答（1 个）

jonas
jonas 2018-8-6
编辑：jonas 2018-8-6
You can increase the resolution by adjusting the levelstep property
contourf(x,y,z,'levelstep',2)
Adjust the limits on the colorbar by
colorbar('limits',[min(obsSplMaxInterp(:) max(obsSplMaxInterp(:))])

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