I use mapserver to load postgis data, but get a blank map, so I don't know how to check where is the problem.
I enter in the browser " http://127.0.0.1/cgi-bin/mapserv?&map=/home/jack/Downloads/mapfile.map&mode=map";, just get a blank image. my mapfile.map is like this: MAP NAME places0 STATUS ON SIZE 420 300 EXTENT -20000000 -20000000 20000000 20000000 UNITS METERS IMAGECOLOR 255 255 255 WEB TEMPLATE "template.html" IMAGEPATH "/var/www/output/" IMAGEURL "/output/" END LAYER STATUS default GROUP "default" TYPE POINT CONNECTIONTYPE postgis CONNECTION "dbname=osm host=localhost user=osm password=osm port=5432" NAME "places0" DATA "geometry from (select * from osm_new_places where name is not NULL order by population asc nulls first) as foo using unique osm_id using srid=3857" CLASS NAME "places0" COLOR 255 215 0 END END END # end of map file END --------------------------------------------------------------------------------------- I test in postgres the sentence "select * from osm_new_places where name is not NULL order by population asc nulls first" will return many results. Also the CONNECTION define I think is right. And I can not check wher the problem occured. Anyone give some advice and method for this? -- Yang Li GIS Developer P.R.China
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