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* penny data file:
See the discussion here:
https://savannah.gnu.org/patch/?func=detailitem&item_id=8472
* west0479 data file:
Chemical engineering plant models Eight stage column section, all
rigorous from set CHEMWEST, from the Harwell-Boeing Collection.
west0479.mtx: original file obtained from from
https://math.nist.gov/MatrixMarket/data/Harwell-Boeing/chemwest/west0479.html
west0479.mat: generated from west0479.mtx as follows:
x = load ("west0479.mtx");
nr = x(1,1);
nc = x(1,2);
i = x(2:end,1);
j = x(2:end,2);
sv = x(2:end,3);
west0479 = sparse(i, j, sv, nr, nc);
save -text west0479.mat west0479
Note that the original file has 1910 entries but 22 of them are exact
zeros:
384 86 0.0000000000000e+00
360 116 0.0000000000000e+00
361 117 0.0000000000000e+00
362 118 0.0000000000000e+00
238 224 0.0000000000000e+00
239 225 0.0000000000000e+00
240 226 0.0000000000000e+00
250 240 0.0000000000000e+00
251 241 0.0000000000000e+00
252 242 0.0000000000000e+00
272 259 0.0000000000000e+00
273 260 0.0000000000000e+00
274 261 0.0000000000000e+00
294 278 0.0000000000000e+00
295 279 0.0000000000000e+00
296 280 0.0000000000000e+00
316 297 0.0000000000000e+00
317 298 0.0000000000000e+00
318 299 0.0000000000000e+00
338 316 0.0000000000000e+00
339 317 0.0000000000000e+00
340 318 0.0000000000000e+00
These are not explicitly included in the west0479.mat file.
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