Dream 3d to Matlab

[David Harra]

I am very new to Dream3d and coding in general. 

My objective is to take my raw ESBD data, to put it into Matlab then eventually OnScale to simulate waves through the EBSD data. My raw data is an ANG files which I have now saved as an H5EBSD file. 

I also have 3 other output files in the form  .am , .dream3d and .xdmf

I have attached an image of my files and the Matlab types of files I am supposed to use.

In the Matlab image, How would I generate the FeatureDataDeg.csv file and also use my EBSD data to run in Matlab?

Thanks

Dave :)

[rwde...@gmail.com]

Dave,

I'm not totally clear on what you need to do, but you can use the h5read command in Matlab to read data straight out of the .dream3d files which are HDF5 files (https://www.mathworks.com/help/matlab/ref/h5read.html). You can get to most of the data you might need with the paths DataContainers/ImageDataContainer/CellData and DataContainers/ImageDataContainer/CellFeatureData

so you can get the Euler angles, for example, like this: 

eulers = h5read('your.dream3dFile', DataContainers/ImageDataContainer/CellData/EulerAngles);

or feature sizes like this:

featureSize = h5read('your.dream3dFile', DataContainers/ImageDataContainer/CellFeatureData/FeatureSizes);

I also find HDFView (https://www.hdfgroup.org/downloads/hdfview/) useful. It's a free GUI for poking around in HDF5 files you can use to figure out what is stored where within your .dream3d files

Hope this helps,

Ryan

[Michael Jackson]

If you want to be brave and take a look at the latest nightly build go to http://dream3d.bluequartz.net/binaries/experimental/ and pick the latest date that has a build for your operating system.

 

I point you to that version because there is an Onscale Table writing filter in that version. This would allow you import your EBSD data, segment the data and then write out an OnScale Table file.

 

--

Mike Jackson

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