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the following article discusses averaging techniques, such as a 3D longitudinal averaging, which is what you are looking for.<br>
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looping over your multi-blocks should be a rather simple extension.<br>
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<div><a href="https://blog.kitware.com/paraviews-python-programmable-filters-in-geophysics/" target="_blank">https://blog.kitware.com/paraviews-python-programmable-filters-in-geophysics/</a><br>
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<div class="PlainText">-----------------<br>
Jean <br>
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