Specific forms of data storage and file types external to Mathematica.
20
votes
3answers
844 views
How to read data file quickly?
I have a tab separated value file with 10 million rows each of which has three tab separated values. The first value is a string, the second an integer, and the third another string. How to read ...
18
votes
3answers
943 views
Download xkcd Click and Drag comic
Inspired by the recent question about xkcd styled plots I started looking at xkcd again and I came across a comic titled Click and Drag. And if you do that, you start exploring a larger drawing. A ...
7
votes
1answer
193 views
Converting other C++ classes to MTensor in LibraryLink
Hopefully this will be a quick question + a quick answer:
Say I have a C++ (or C) code using LibraryLink. I am using a library that defines a specific matrix class, as many numerical libraries ...
7
votes
1answer
112 views
Organizing similar datasets using Contexts or otherwise
I often import several long time series to analyze something about a city. When I have multiple cities, I use contexts. As a simple example,
...
4
votes
3answers
244 views
Plotting data with exponentials
I have some data with 19000 sublists such as :
{" 7.9080000e+01 1.9283193e+04"}
Where the first number is the value for variable ...
3
votes
3answers
213 views
Support for Compressed Sparse Column sparse matrix representation
Is there native support for Compressed Sparse Column (CSC) format for sparse matrices, like importing and manipulating them?
1
vote
1answer
112 views
Backward compatibility issues while DumpSaving Interpolation polynomials
I have bkwrd compatibility issues when I save my NDSolve result (which is an interpolating polynomia) using DumpSave from Mathematica 8 on Windows 7 and then try ...
