Have surfaces in powerpoint

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A 2014-11-9

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评论： Chad Greene 2014-11-19

Not sure if my question is too relevant for this forum. I am using Matlab to create 3d surfaces. However, I am trying to find a way to put these surfaces in powerpoint. Is there a better alternative out there which generates visually appealing surfaces?

It would be excellent if I am able to show these surfaces as 'rotating'?

Thanks

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Chad Greene 2014-11-9

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You wrote: "Is there a better alternative..." Better than what? What exactly do you find visually unappealing about the surfaces you're generating?

If you mean Matlab's built-in options for saving images make low quality graphics, try export_fig.

If you want a video of a rotating surface, try videoWriter.

If you want a .gif of a moving surface, the export_fig package includes a function called im2gif.

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Chad Greene 2014-11-10

编辑：Chad Greene 2014-11-10

在 MATLAB Online 中打开

Yuck indeed. It's similar to the results you get when you type

surf(peaks)

A few tricks that are good to have up your sleeve:

1. If you don't need edge lines, turn them off. You can do this a number of ways. Here's one way:

h = surf(peaks); 
set(h,'edgecolor','none')

Or you can mute the edges by adjusting their transparency:

h = surf(peaks); 
set(h,'edgealpha',.3)

Or you can turn edges off with shading flat or shading interp

surf(peaks)
shading interp

2. Matlab's default color maps only use 64 colors, making any color gradient look like low-res junk. I always change color maps to 256 colors.

3. Matlab's default options for saving figures are lousy. export_fig is much better. You can manually prevent Matlab from saving the gray space around the axes, but export_fig sets the background color to white by default. It also performs anti-aliasing, which makes text and lines less jagged. export_fig also makes changing resolution easy--e.g., add the -m3 option to save the figure at 3 times the resolution shown on the screen.

4. Toy with lighting if you want to get fancy. Note that Matlab's documentation uses their own lousy methods of saving figures, so even though Matlab can make fancy-looking graphics, default settings will not show great-looking graphics in the figure window, nor can Matlab save great-looking graphics easily using default settings. Again, use export_fig.

Below is an image I made with the following script:

surf(peaks) 
axis tight
camlight
shading interp
colormap(jet(256)) 
lighting phong
export_fig better.png -m3 -q101

A 2014-11-17

编辑：A 2014-11-18

在 MATLAB Online 中打开

Dear Chad - Not sure if you can see this, but I have a quick follow-up.

Here is the code and results I have so far:

h = surf(peaks);
axis tight
camlight
shading interp
colormap(winter) 
lighting phong
shading interp
set(h,'edgecolor',[0 0 0.4]);
set(h,'meshstyle','both');
set(h,'linewidth',2);
export_fig better.png -m7 -q101

1) When I use the export_fig line in your code, it includes the gray space around? It doesn't set it as white?

2) Also, is there a way to add some 'padding' around the surface so that it looks nicer when it is pasted into a word document? It feels like some of the axis numbers being cut off.

3) Lastly, when I add the following piece of code to reduce the transperency of the blue edges, it changes the 'gridlines' into 'dotted' lines. This is clearly different from the image above? I like the gridlines in the above generated image.

set(h,'edgealpha',.15);

Thank you very much for all your help. This is such a massive improvement over the default surfaces.

A 2014-11-19

The axes title still creeps out. Is there a way to pad?

Chad Greene 2014-11-19

Strange. Can you show an example?

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MATLAB Graphics Labels and Styling Interactions, Camera Views, and Lighting Lighting, Transparency, and Shading

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