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I'm trying to export vector files from QGIS to KML. When I open the KML in Google Earth I get erratic lines all around the globe. All layers set to WGS84. I have read the other topics on KML export and tried the suggestions with no success. Seem so simple but something is off.
Here is the boundary I'm trying to export. It is a line not poly.
This is what i get when I open the Exported KML to GE
The procedure I normally use is to convert .shp to .Kml is below
Right click on the layer,
click on save as for qgis 2.8 and versions below, but for Qgis version 3.8.3, you have to go to export and click and Save Features As
When the above pop up displays change the format from ESRI shapefile to Keyhole Markup Language (KML).
Give the file name (File name).
Under CRS I will advise you chose EPSG:4326-WGS 84
Save the file and open the file. It should display now.
If the file doesn't show correctly in QGIS, than your shapefile seems to be corrupted somehow/or in the "wrong" CRS - at least it is not a problem with kml-export, the problem seems to be with your shapefile. A workaround would be to just "move" your object in the right place - maybe ask another question here for that.
This is however a quick and dirty-solution - shift your object by selecting it, toggle edit mode and use the shift-function - see screenshot. Or ask a new question here how to shift/place your shapefile in the right position. Or find the correct CRS-setting.
Your data has no CRS defined (prj-file missing, no layer CRS). So it seems to be a CRS-problem. When I open your data, they are defined as 4326 (the default in my QGIS), but they do not correspond to this CRS. You should find the right CRS for your data and set in manually to solve the problem.
When I open your boundary, it shows very strange coordinates, like 421108,4033009 - see screenshot below. Scale shows as 0:1 and OpenStreetMap background map does not show (normally, it automatically warps to conform with 4326).
WGS84 Bounds are: -180.0000, -90.0000, 180.0000, 90.0000, see EPSG Projection 4326 - WGS 84 - but your coordinates are far off: 421108,4033009 ! When saving such data to another format, it ends up in a mess.
So you have to find out what projection your data was created in. When I assign CRS 3857 to your boundary (NOT re-project, but set CRS), at least it is shown in somehow meaningful way on top of OpenStreetMap, even though probably not in the right place and size (you're not working on Algeria, are you?):
Where did you get your data from? What EPSG was used for it? Which area are you working on? That could give a hint which EPSG could be appropriate. Than simply change Coordiante reference system: right-cling on your layer - set CRS - set CRS for layer (do NOT reproject, but set CRS). Than, you can save it as KML - in in the export-dialogue, you should use (reproject to) 4326.
I am working on this as well. Funky here too, but I just had a breakthrough. My process in version 3.8 is to diagnose where the issue is: 1. Export as KML (I have tried to set the CRS many different ways) MAKE SURE you have SAVE LAYER checked so that you get the layer exported in right beside the one you have exported from. 2. Turn visability on and off to see if the new, exported layer in QGIS is in the right place. 3. Mine often is not... even in QGIS! so... 4. Open Properties to see Information of the layer.
I started to realize that even though the CRS was the same, the Extents were reversed!
I am not sure why an export to KML would do this but to solve the issue, I started to set my CRS on export, as the more specific CRS. (In my case it is
Original Info from imported KML layer, which looks located correctly in QGIS:
CRS
EPSG:4326 - WGS 84 - Geographic
Extent
-82.5787124633789063,38.4103965759277344 : -82.5669479370117188,38.4228591918945313
Unit
degrees
Here is the exported using the CRS WGS 84:
CRS
EPSG:4326 - WGS 84 - Geographic
Extent
38.4103999976518011,-82.5787103514051068 : 38.4228528252385004,-82.5669500152173015
Unit
degrees
See the difference?
So, if I now export into KML and select CRS of WGS 84 [32617] (UTM Zone 17N), I get this again form the layer that was exported, BUT saved as a new layer in QGIS.
CRS
EPSG:4326 - WGS 84 - Geographic
Extent
-82.5787103514051068,38.4103999976518011 : -82.5669500152173015,38.4228528252385004
Unit
degrees
See! Extent shows exactly the opposite. Like you, I am pretty new to this and learning everyday. I do not know what this means, what it is for, or even if it is a bug, but it is certainly not intuitive.
