Scatterplot equivalent in plotting 3d data in 2d

1 次查看（过去 30 天）

显示更早的评论

Hasti Yavari 2017-7-24

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/349977-scatterplot-equivalent-in-plotting-3d-data-in-2d

评论： Walter Roberson 2017-7-25

采纳的回答： KSSV

在 MATLAB Online 中打开

Hi everyone,

I have three vectors of same size (54796X1 double) and want to plot them like the image attached. Using the scatter function, scatter(x,y ,35, z, 'filled'), naturally I get a plot made of dots. I increased the dot size to make the data look full but as you can see it is not a good solution. Do you know how the plot in the attached image is generated with the same data? I thought of image but I can not get it to work. I have attached the vectors in the workspace. Here is how I got my plot using scatter and contour:

     scatter(x,y ,35,  z, 'filled') 
     x_interpolated = linspace( -90, 90, 300 );
     y_interpolated = linspace( -90, 90, 300 );
     [ hx, hy  ] = meshgrid( x_interpolated, y_interpolated );
     F = TriScatteredInterp(x, y, z);
     data_interpolated = F(hx, hy);
     hold on
     contour( x_interpolated, y_interpolated, data_interpolated, 10, 'k' );

Any help is highly appreciated.

/Hasti

6 个评论
显示 4更早的评论隐藏 4更早的评论

Walter Roberson 2017-7-24

It looks to me to be likely that your scatter plot is completely hidden by the contour plot. Both are in the z=0 plane and since they are the same depth and are both space filling areas instead of lines, the one that is going to show up is the one drawn last.

Hasti Yavari 2017-7-24

Hi Walter, I understand your concern but that is not the case here. I can not upload anymore images due to mathworks regulations but if you just run the contour and scatter function lines separately you will see my point.

请先登录，再进行评论。

请先登录，再回答此问题。

采纳的回答

KSSV 2017-7-24

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/349977-scatterplot-equivalent-in-plotting-3d-data-in-2d#answer_275296

You need to do interpolation with the scattered data...and then use surf or pcolor. Read about scatteredInterpolant

9 个评论
显示 7更早的评论隐藏 7更早的评论

KSSV 2017-7-24

Yes....you were taking a small region out of the given region.

Walter Roberson 2017-7-25

... and no scatter() plot.

请先登录，再进行评论。

类别

MATLAB Graphics 2-D and 3-D Plots Contour Plots

在 Help Center 和 File Exchange 中查找有关 Contour Plots 的更多信息

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by