Doug's MATLAB Video Tutorials

November 11th, 2009

I like his slow, clear, methodical presentation with great visualizations. It is the first time I have deeply understood some of the volume visualization techniques we have.

• 1 of 9 Definitions for scalar and vector fields.
• 2 of 9 Examples of scalar and vector fields (temperature in a room vs air currents)
• 3 of 9 Displays scatter3 and slice plots.
• 4 of 9 Displays contourslice and isosurface.
• 5 of 9 Making a 3-d plot ‘pretty’ with lighting, shading, interpolation, etc…
• 6 of 9 Displays quiver3 and coneplot
• 7 of 9 Displays and explains streamplot and streamslice
• 8 of 9 Displays and explains streamtubes and streamribbons
• 9 of 9 Unifying example

14:55 UTC | Posted in Format: Video, Level: Basic | Permalink | 2 Comments »

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2 Responses to “Basics: Volume visualization: 4/9 Display of contourslice and isosurface”

1. Ryan M Turner replied on December 7th, 2010 at 21:36 UTC :
   

   Hey Doug:

   Thanks for these informative Matlab videos!

   I have a question. I would like to do exactly what you did except my data is not on a grid. I have a list of x, y, z coordinates with a scalar field defined at those points; however, the points are not on a uniform grid such as that created by “meshgrid.” I’d also like to look at the planar slices of that field as separate 2D objects either with a colormap or with contour lines.

   My first thought was that I could interpolate my output data values so that I have a grid. Looking at the function “interp2,” however, it turns out that I already need to have a grid of points to interpolate.

   I have searched online for this answer and have no clue where to turn next. Any advice pointing me in the right direction would be helpful.

   Thanks!

   Ryan

2. dhull replied on December 10th, 2010 at 20:37 UTC :
   

   http://blogs.mathworks.com/videos/2007/11/02/advanced-matlab-surface-plot-of-nonuniform-data/

   The above might be similar.

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