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Special Forums UNIX and Linux Applications Matlab (more generally: sorting data by date) Post 302327746 by jim mcnamara on Monday 22nd of June 2009 01:34:57 PM
Old 06-22-2009
All you care about is the mm part.

Programatically I would transform the date column in the array, to a 'season value' before doing any sorting.

Create a vector (assuming zero based) S with 12 elements s[0..2] == 0 (Spring),
s[3..5] == 1 (Summer) and so on.

For each row in your array, get the mm substring from the date. Convert the mm to an integer say i, replace the date value in the column with s[i]. Use a length(column) to see if the year 2000 problem exists.

If you sort numerically on the transformed date column, you get seasonal order. You can also preserve the date by adding another column to the array, transforming into it, then sorting.
 

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ADDLOFIG(3)						       MBK LOGICAL FUNCTIONS						       ADDLOFIG(3)

NAME
addlofig - create a new structural cell model ORIGIN
This software belongs to the ALLIANCE CAD SYSTEM developed by the ASIM team at LIP6 laboratory of Universite Pierre et Marie CURIE, in Paris, France. Web : http://asim.lip6.fr/recherche/alliance/ E-mail : alliance-users@asim.lip6.fr SYNOPSYS
#include "mlo.h" lofig_list *addlofig(figname) char *figname; PARAMETER
figname Name of the figure to be created DESCRIPTION
addlofig creates a new figure called figname and adds it to the list of figure in memory. The new figure is added in front of the list, and becomes itself the list head. No check is performed to see if a figure with the figname exists on disk. If it is the case, the preexisting file will be erased while saving. The fields LOCON, LOINS, LOSIG, BKSIG, LOPAR LOTRS and USER are set to NULL. The field MODE is set to 'A'. The field NEXT points to the previous head of list. RETURN VALUE
addlofig returns a pointer to the newly created figure. ERRORS
"*** mbk error *** illegal addlofig figure figname already exists" There is already a logical figure called figname in memory, so it's impossible to give this name to a cell to be created. EXAMPLE
#include "mlo.h" lofig_list *get_the_fig(name) char *name; { lofig_list *pt, *fill_fig(/* lofig_list * */); /* scan figure list */ for (pt = HEAD_LOFIG; pt; pt = pt->NEXT) if (!strcmp(pt->NAME, figname)) break; return pt ? pt : fill_fig(addlofig(figname)); } SEE ALSO
mbk(1), lofig(3), getlofig(3), dellofig(3), loadlofig(3), savelofig(3), flattenlofig(3), rflattenlofig(3). BUG REPORT
This tool is under development at the ASIM department of the LIP6 laboratory. We need your feedback to improve documentation and tools. ASIM
/LIP6 October 1, 1997 ADDLOFIG(3)
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