2020年5月12日 · The *.prj file is part of the Shapefile format which is consists of other files: *.shp: contains the feature geometries. *.dbf: contains feature attribute data, as a table. *.shx: indexation data for iterations accross the features. *.prj: the coordinate reference system represented as text.

I've looked at the .prj files: different programs produce different prj files. Is there a standard for how the parameters must be specified in a prj file? As far as I know the name of the projection (e.g. PROJCS["ETRS89 / UTM zone 32N (zE-N)",…]) can be freely assigned but I cannot believe that the name of the datum (e.g. DATUM["D_ETRS_1989 ...

2016年10月17日 · .prj file is a non-mandatory file for group of files generally called as Shapefile. Mandatory files are: .shp, .shx and .dbf. Citing wikipedia: .prj — projection format; the coordinate system and projection information, a plain text file describing the projection using well-known text format. In QGIS you can create .prj file through menu:

2021年7月22日 · Having a prj file makes this easy, so I'd like to be able to make that prj file. Yes the prj file contains the definition of the coordinate system; this is what I don't have and would like a reliable method to create. Once I have that file, the …

The shapefile should have a .prj file which defines the projection. You can use it together with one of the following 3 options to get either the proj4 string, WKT definition or EPSG code. To get proj4 definition:

2017年6月20日 · I can say a qualified 'yes', ArcGIS does read PRJ files for the formats that I have used. If you use define projection an AUX file will be generated not a PRJ but if one exists, in my experience, it will be read if ArcGIS can read and interpret the information.

2020年3月23日 · When you load in QGIS a shapefile without a PRJ file, you can set the coordinate system, but no PRJ file is created. This older question: How to obtain .prj files in QGIS? has an answer saying menu "Vector - Data Management Tools - Define Current Projection" does it, but it is not present in recent versions. Any suggestion of how to do it?

2017年11月5日 · An ESRI shapefile consists of a main file, an index file, and a dBASE table. Shapefiles were introduced with ArcVIEW 2.0 and it may be that it could not utilize .prj files. The .prj file itself was already used by ESRI in the Arc/Info E00 coverage format. Possible reasons to not use a .prj file. It is not compulsory

2018年1月19日 · I'm very new to GIS concepts. Is there a way or procedure of finding out whether the co-ordinate system is in UTM, latitude/longitude or in stateplane using .prj file? My .prj file contains the following text:

2018年1月31日 · The file format was never intended for what it is used widely today. Therefore you have several issues when switching programs. If you stay within QGIS you can just set correct crs in the properties and export the layer to a new file. QGIS writes a .prj in its style and also a .qpj . You can´t really tell in which program the .prj file was ...