The data tag has no wiki summary.
3
votes
0answers
77 views
External file Sub Matrix Import
Is there a Built-In Mathematica Function to extract a
Sub matrix from a huge external file?
Functions getting pieces of internal nested Lists, (arrays) are in place.
Example:
...
3
votes
0answers
152 views
How to save (large) data generated from simulations
The following is a simple example of a much larger simulation that I want to run
Define some processes
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1
vote
0answers
48 views
How can I recover a graph from a graphical output in a notebook after resetting the kernel?
I have an old Mathematica notebook with an output for a graph structure $G$ I would like to recover. However, the routine for building up the graph is stochastic, so I can't simply rerun the code.
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1
vote
0answers
189 views
Doing local FFT on huge 3D vector data cell mesh and visualizing it spatially?
Simulation type:
I'm running a simulation with the OOMMF micromagnetics package
http://math.nist.gov/oommf/
where are magnet is represented by a mesh of 3 million cells, it gets excited by a ...
1
vote
0answers
70 views
ReadList and multiple access of the same file
I have a file containing a large amount of data which can be processed independently. In order to process all data in a reasonable amount of time I distribute the jobs on three different machines. ...
1
vote
0answers
145 views
Data wrangling messy data
This is an offshoot from my previous question about dealing with large datasets in Mathematica. I think it might provide more value to more people as a separate question.
I'd like to know how people ...
0
votes
0answers
44 views
Significant platform-dependent efficiency when importing data?
I'm curious, as I understand that answer this way:
If you are using a Linux derivative or something like cygwin on
Windows, then this is an efficient solution for reading only the third
field ...
0
votes
0answers
38 views
tree of values representation
Main Question
Is there an efficient way to output a tree of values similar to the output of TreeForm?
Something like
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0
votes
0answers
53 views
How to combine file data chronologically via reading numbers in a filename and put it in one list?
Say I have a bunch of files with nearly same filename, eg. data_timestep1, data_timestep2, ...
The data itself in one file is ({x1, y1, z1, absolute field value 1}, {x2, y2, z2, absolute field value ...
