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Rowan Cockett
49 lines
1.5 KiB
ReStructuredText
49 lines
1.5 KiB
ReStructuredText
.. _examples_Maps_ComboMaps:
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.. --------------------------------- ..
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.. ..
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.. THIS FILE IS AUTO GENEREATED ..
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.. ..
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.. SimPEG/Examples/__init__.py ..
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.. ..
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.. --------------------------------- ..
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Maps: ComboMaps
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===============
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We will use an example where we want a 1D layered earth as
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our model, but we want to map this to a 2D discretization to do our forward
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modeling. We will also assume that we are working in log conductivity still,
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so after the transformation we want to map to conductivity space.
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To do this we will introduce the vertical 1D map (:class:`SimPEG.Maps.SurjectVertical1D`),
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which does the first part of what we just described. The second part will be
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done by the :class:`SimPEG.Maps.ExpMap` described above.
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.. code-block:: python
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:linenos:
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M = Mesh.TensorMesh([7,5])
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v1dMap = Maps.SurjectVertical1D(M)
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expMap = Maps.ExpMap(M)
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myMap = expMap * v1dMap
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m = np.r_[0.2,1,0.1,2,2.9] # only 5 model parameters!
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sig = myMap * m
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If you noticed, it was pretty easy to combine maps. What is even cooler is
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that the derivatives also are made for you (if everything goes right).
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Just to be sure that the derivative is correct, you should always run the test
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on the mapping that you create.
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.. plot::
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from SimPEG import Examples
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Examples.Maps_ComboMaps.run()
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.. literalinclude:: ../../../SimPEG/Examples/Maps_ComboMaps.py
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:language: python
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:linenos:
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