I am trying to import gridded data from BOM into QGIS.

The data is available as an Arc/Info ASCII GRID which is a text file with no accompanying files (unlike in this question Convert ESRI Integer ASCII Grid to something useful).

I have tried using the Delimited Text option in the Data Source Manager but it is not point coordinates and as far as I can tell it is not WKT either.

I also tried resaving the text file as .asc and importing as a raster file but it says it is not a supported raster data source.


1 Answer 1

  1. I noticed from the sample data that the prj file was missing. I just took the prj file from their sample data and it solved the issue.

Just take the content below and create a text file copy and paste the following:

Datum GDA94
Zunits NO
Units DD
Spheroid GRS1980
Xshift 0.0000000000
Yshift 0.0000000000

  1. Save the text file as the same name as your grid file but .prj. ie.: hdd12ann.txt (the grid file), hdd12ann.prj for the projection.

  2. Drag and drop the grid file in .txt format from the Window's File Explorer to QGIS canvas. Below is the result.

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