Timeline for Choosing the right geo reference system - NorthEast Atlantic
Current License: CC BY-SA 3.0
16 events
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| Sep 24, 2014 at 8:22 | history | edited | anina | CC BY-SA 3.0 |
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| Sep 23, 2014 at 12:54 | history | edited | anina | CC BY-SA 3.0 |
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| Sep 19, 2014 at 10:11 | comment | added | anina | Let us continue this discussion in chat. | |
| Sep 19, 2014 at 10:10 | history | edited | anina | CC BY-SA 3.0 |
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| Sep 19, 2014 at 10:08 | comment | added | anina | so i have done the following: right click raster layer --> 'save as' --> in the CRS field clicked 'change' --> selected my custom CRS, clicked ok. Then I went to load the new Tiff file i just created however it came up with an error message saying 'invalid data source'. I have loaded a new image titled 'saving new CRS projection' in the question for your reference. Ps. yes on the fly is enabled | |
| Sep 19, 2014 at 9:14 | history | edited | anina | CC BY-SA 3.0 |
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| Sep 19, 2014 at 9:08 | comment | added | AndreJ |
That's the wrong one. You have to save the layer to another file and CRS, add that to the canvas, and remove the old one. The Custom CRS also goes to Project -> Project Properties, CRS tab; with On-the-fly-reprojection enabled.
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| Sep 19, 2014 at 8:46 | comment | added | anina | Do you mean 'save as' for the entire project or each individual layer once they are all loaded? This is the process I have followed: 1. loaded the raster which is in EPSG:4326. 2. Selected 'settings' --> 'Custom CRS' --> entered the following into the 'parameters' field "+proj=sinu +lon_0=10 +x_0=False Easting +y_0=False Northing" and clicked ok --> Then right clicked the layer in question and next to the 'CRS' field clicked 'change' and selected the Custom CRS and clicked 'ok'. | |
| Sep 19, 2014 at 6:58 | answer | added | AndreJ | timeline score: 2 | |
| Sep 19, 2014 at 6:32 | comment | added | AndreJ |
Supposed your original coordinates are in WGS84 lat/lon: Load the data with EPSG:4326, then rightclick -> Save As ... to a new name and the custom CRS. Do not use Set CRS for layer, it will not reproject the coordinates.
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| Sep 19, 2014 at 6:10 | history | edited | anina | CC BY-SA 3.0 |
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| Sep 19, 2014 at 6:10 | comment | added | anina | Ok, how do i get the system to re-project all the coordinates? Currently, it appears to me to be registering the new prime meridian of 10 (see the test section in the new screen shot above), is this correct? Also fyi I would be using separate Qgis projects for every new custom CRS. | |
| Sep 18, 2014 at 12:25 | comment | added | AndreJ | If you want to work with both meridians, you should create two custom CRS. Just exchanging the value does not automatically reproject all coordinate values. | |
| Sep 18, 2014 at 12:17 | history | edited | anina | CC BY-SA 3.0 |
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| Sep 18, 2014 at 8:33 | answer | added | radouxju | timeline score: 3 | |
| Sep 18, 2014 at 7:43 | history | asked | anina | CC BY-SA 3.0 |