How to plot a contourf without the lines

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Nick van der maat
Nick van der maat 2015-5-11
评论： Thomas Koelen 2015-5-11
Hello,
I am using contourf for a plot, but when i set de color distribution on 15 or more its almost invisible due all the lines next to each other.
Is there some code to show it without the contour lines ?

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回答（1 个）

Thomas Koelen
Thomas Koelen 2015-5-11
Hallo Nick,
Een contour plot is letterlijk een "omlijning" plot, dus dat zou niet erg handig zijn ;)! Maar gelukkig zijn er andere oplossingen.
kijk bijvoorbeeld hier naar:
[X,Y] = meshgrid(-8:.5:8);
R = sqrt(X.^2 + Y.^2) + eps;
Z = sin(R)./R;
% surface in 3D
figure;
surf(Z,'EdgeColor','None');
% 2D map using view
figure;
surf(Z,'EdgeColor','None');
view(2);
en nu kunnen we de plot in 2d laten zien:
Thomas
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Nick van der maat
Nick van der maat 2015-5-11
figure
hist3([MAIN_EngSpeed MAIN_EngPercentLoadAtCurrentSpeed],[40 20])
title(' Engine Speed - Engine percent load (probability density distribution)');
xlabel('Engine Speed [rpm]');
ylabel('Engine percent load at current speed [%]');
%set(gcf,'renderer','opengl');
set(get(gca,'child'),'FaceColor','interp','CDataMode','auto');
colorbar
figure
hist3([MAIN_EngSpeed(MAIN_EngSpeed>600) MAIN_EngPercentLoadAtCurrentSpeed(MAIN_EngSpeed>600)],[40 20])
[N,C]=hist3([MAIN_EngSpeed(MAIN_EngSpeed>600) MAIN_EngPercentLoadAtCurrentSpeed(MAIN_EngSpeed>600)],[40 20]);
title(' Engine Speed - Engine percent load (probability density distribution)');
xlabel('Engine Speed [rpm]');
ylabel('Engine percent load at current speed [%]');
set(gcf,'renderer','opengl');
set(get(gca,'child'),'FaceColor','interp','CDataMode','auto');
colorbar
%%%Contour plot
figure
contourf(C{1},C{2},N',15);
title(' Engine Speed - Engine percent load (probability density distribution)');
xlabel('Engine Speed [rpm]');
ylabel('Engine percent load at current speed [%]');
colorbar
Thomas Koelen
Thomas Koelen 2015-5-11
Dus wat is nu precies je probleem? hoe wil je je data graag laten zien? En kun je misschien een plaatje laten zien van hoe het er nu uit ziet?

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