NAME

       shpadd - append a shape to an ESRI shapefile

SYNOPSIS

       shpadd file [[x y] [+]]*

DESCRIPTION

       Appends  a  shape to the shapefile determined from file.  The geometric data of the new shape consists of
       lists of X/Y points on the command line grouped into parts, with points in different parts separated by a
       plus  (+)  sign.   If  no  points  or  parts  are given then a shape of type NullShape is appended to the
       shapefile, and otherwise the type of the  new  shape  is  determined  by  the  shapefile's  header.   See
       shpdump(1)  for  a  description  of  shape  types  and how geometric data for parts are interpreted for a
       specific type.  No geometric restrictions set by the shapefile specification are enforced by shpadd(1).

       Shapefiles actually consist of two  files  with  the  same  basename  and  extensions  .shp and .shx  (or
       .SHP and .SHX)  containing the shape data and shape index respectively.  The files to open are determined
       by first stripping any filename extension from  file  and  attempting  to  open  the  files  file.shp  or
       file.SHP, and file.shx or file.SHX for the respective data and index files.

EXIT STATUS

       0      Successful program execution.

       1      Missing file argument, the shapefile can't be opened, or the program ran out of memory.

DIAGNOSTICS

       The following diagnostics may be issued on stdout:

       Unable to open:file

       Out of memory

AUTHORS

       Frank  Warmerdam  (warmerdam@pobox.com)  is  the  maintainer  of  the shapelib shapefile library.  Joonas
       Pihlaja (jpihlaja@cc.helsinki.fi) wrote this man page.

BUGS

       Coordinate values that can't be be parsed by sscanf(3) get undefined values.   There's  no  way  to  give
       measure  or Z data to vertices in a shape, but those are always set to zero if the shapefile's shape type
       requires those values.  MultiPatch shape types aren't supported.

SEE ALSO

       dbfadd(1), dbfcreate(1), dbfdump(1), dbf_dump(1), shpcreate(1), shpdump(1), shprewind(1)