csvjson
*******


Description
===========

Converts a CSV file into JSON or GeoJSON (depending on flags):

   usage: csvjson [-h] [-d DELIMITER] [-t] [-q QUOTECHAR] [-u {0,1,2,3}] [-b]
                  [-p ESCAPECHAR] [-z FIELD_SIZE_LIMIT] [-e ENCODING] [-S] [-v]
                  [-l] [--zero] [-V] [-i INDENT] [-k KEY] [--lat LAT] [--lon LON]
                  [--crs CRS] [--stream] [-y SNIFF_LIMIT] [-I]
                  [FILE]

   Convert a CSV file into JSON (or GeoJSON).

   positional arguments:
     FILE                  The CSV file to operate on. If omitted, will accept
                           input on STDIN.

   optional arguments:
     -h, --help            show this help message and exit
     -i INDENT, --indent INDENT
                           Indent the output JSON this many spaces. Disabled by
                           default.
     -k KEY, --key KEY     Output JSON as an array of objects keyed by a given
                           column, KEY, rather than as a list. All values in the
                           column must be unique. If --lat and --lon are also
                           specified, this column will be used as GeoJSON Feature
                           ID.
     --lat LAT             A column index or name containing a latitude. Output
                           will be GeoJSON instead of JSON. Only valid if --lon
                           is also specified.
     --lon LON             A column index or name containing a longitude. Output
                           will be GeoJSON instead of JSON. Only valid if --lat
                           is also specified.
     --crs CRS             A coordinate reference system string to be included
                           with GeoJSON output. Only valid if --lat and --lon are
                           also specified.
     --stream              Output JSON as a stream of newline-separated objects,
                           rather than an as an array.
     -y SNIFF_LIMIT, --snifflimit SNIFF_LIMIT
                           Limit CSV dialect sniffing to the specified number of
                           bytes. Specify "0" to disable sniffing entirely.
     -I, --no-inference    Disable type inference when parsing CSV input.

See also: Arguments common to all tools.


Examples
========

Convert veteran’s education dataset to JSON keyed by state
abbreviation:

   csvjson -k "State Abbreviate" -i 4 examples/realdata/FY09_EDU_Recipients_by_State.csv

Results in a JSON document like:

   {
       [...]
       "WA": {
           "State Name": "WASHINGTON",
           "State Abbreviate": "WA",
           "Code": 53.0,
           "Montgomery GI Bill-Active Duty": 7969.0,
           "Montgomery GI Bill- Selective Reserve": 769.0,
           "Dependents' Educational Assistance": 2192.0,
           "Reserve Educational Assistance Program": 549.0,
           "Post-Vietnam Era Veteran's Educational Assistance Program": 13.0,
           "TOTAL": 11492.0,
           "": null
       },
       [...]
   }

Converting locations of public art into GeoJSON:

   csvjson --lat latitude --lon longitude --k slug --crs EPSG:4269 -i 4 examples/test_geo.csv

Results in a GeoJSON document like:

   {
       "type": "FeatureCollection",
       "bbox": [
           -95.334619,
           32.299076986939205,
           -95.250699,
           32.351434
       ],
       "crs": {
           "type": "name",
           "properties": {
               "name": "EPSG:4269"
           }
       },
       "features": [
           {
               "type": "Feature",
               "id": "dcl",
               "geometry": {
                   "type": "Point",
                   "coordinates": [
                       -95.30181,
                       32.35066
                   ]
               },
               "properties": {
                   "title": "Downtown Coffee Lounge",
                   "artist": null,
                   "description": "In addition to being the only coffee shop in downtown Tyler, DCL also features regular exhibitions of work by local artists.",
                   "install_date": null,
                   "address": "200 West Erwin Street",
                   "type": "Gallery",
                   "photo_url": null,
                   "photo_credit": null,
                   "last_seen_date": "2012-03-30"
               }
           },
           [...]
       ],
       "crs": {
           "type": "name",
           "properties": {
               "name": "EPSG:4269"
           }
       }
   }
