On Fri, Mar 7, 2014 at 3:18 AM, Milton Ribeiro <[email protected]> wrote: > Dear all, > > I have vector maps with just one line each. > When I run v.univar setting a numeric collumn, de MIN and MAX value looks > fine (the same value) but SUM stats looks very strange. > > Anyone have idea what is happening?
I tried with "North Carolina", generating a single point (using SQLite backend): GRASS 6.4.3 (nc_spm_08):~ > echo "593493.1|4914730.2|123.1|well" | v.in.ascii out=point column='x double precision, y double precision, mynum double precision, mytext varchar(50)' Scanning input for column types... Maximum input row length: 30 Maximum number of columns: 4 Minimum number of columns: 4 Column: 1 type: double Column: 2 type: double Column: 3 type: double Column: 4 type: string length: 4 Importing points... ... Number of nodes: 1 Number of primitives: 1 Number of points: 1 ... v.in.ascii complete. GRASS 6.4.3 (nc_spm_08):~ > v.db.select point cat|x|y|mynum|mytext 1|593493.1|4914730.2|123.1|well GRASS 6.4.3 (nc_spm_08):~ > v.univar point col=mynum type=point number of features with non NULL attribute: 1 number of missing attributes: 0 number of NULL attributes: 0 minimum: 123.1 maximum: 123.1 range: 0 sum: 123.1 mean: 123.1 mean of absolute values: 123.1 population standard deviation: 0 population variance: 0 population coefficient of variation: 0 sample standard deviation: -nan sample variance: -nan kurtosis: -nan skewness: -nan "sum" looks ok. Can you please try this example? Markus _______________________________________________ grass-user mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/grass-user
