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splitvar/splicevar 1.0

  Date Added: April 12, 2013  |  Visits: 157

splitvar/splicevar

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Saving large (>2 GB) variables using the '-v7.3' flag is terribly slow, especially if the variable is not a simple matrix. If the large variable that is holding you up is a 1-D array, you can use SPLITVAR to break it up into separate variables in the workspace. This could allow you to save the workspace without the dreaded '-v7.3' flag. After reloading the workspace, use SPLICEVAR to build it back into the original variable.Example:I have a ~7.5GB 1x22 array of structures.>> whos Name Size Bytes Class data 1x22 7580671154 structafter running SPLITVAR(data) my workspace contains:>> whos Name Size Bytes Class data_1 1x1 558955428 struct data_10 1x1 182980944 struct data_11 1x1 204706714 struct data_12 1x1 240433764 struct data_13 1x1 242623570 struct data_14 1x1 257212788 struct data_15 1x1 295351300 struct data_16 1x1 277538660 struct data_17 1x1 256249924 struct data_18 1x1 218259258 struct data_19 1x1 255908802 struct data_2 1x1 469168036 struct data_20 1x1 475334632 struct data_21 1x1 469577114 struct data_22 1x1 488044446 struct data_3 1x1 499091734 struct data_4 1x1 455919532 struct data_5 1x1 481254514 struct data_6 1x1 427976576 struct data_7 1x1 445993342 struct data_8 1x1 190239504 struct data_9 1x1 187854604 structTo return to the original variable, run:SPLICEVAR('data').Saving the original workspace with the '-v7.3' flag for me took a couple of hours. Using SPLITVAR takes less than a second, and using SAVE with no '-v7.3' flag takes a few minutes. Loading the workspace takes about a minute, and running SPLICEVAR to get the original variable back takes less than a second.It wouldn't take much to modify to allow it to work with more than 1-D arrays!

Requirements: No special requirements
Platforms: Matlab
Keyword: Data
Users rating: 0/10

License: Shareware Size: 10 KB
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