Thanks for your reply.
So you are confirming that downloading OSM data through JSOM is a waste of time? I wish I had known this earlier. I was advised that it would download all of Nepal but that doesn't seem to be the case.
I tried the open street map data link that you provided. It shows some promise but I haven't looked at the data yet. [Just looked at some of those shapefiles, they do load and display in QGIS. However, when I tried to change the symbology for the helipads, they all disappeared. WTF?]
I also stumbled upon the HOT Export site. It is very convoluted but also shows promise once one figures out the myriad of options. Creating presets would be helped enormously if there were drop-down lists for the keys and their values. My last attempt here failed, probably due to bad capitalization or some such. It looks like a dog's breakfast.
Now I see your reference to Overpass Turbo, hopefully not another blind alley. Simply downloading data in OSM is anything but streamlined. The key/value concept seems to complicate things considerably. What is the benefit of that system?
I have fired up Overpass Turbo. Used the wizard to create and run a query but the export options only offers some less than useful choices. GPX and KML files are of limited use in a GIS and I don't recognize any of the other files. The geojson file was only recognized by QGIS but it would not display.
Then I tried the KML and GPX files. I'm QGIS the KML file was listed but not accepted for viewing; the GPX layers were accepted but would not display. In JSON the KML file was not recognized and GPX file would not display.
If I recall correctly, the option to send the query results directly to JSON failed also.
This is a huge amount of trial and error with very little, almost nothing, to show for two late nights. I appreciate everyone's attempt to help, and have read many wiki pages but she's all uphill.
My intention is very simple -
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download a shapefile of the Nepal task tiles
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download a shapefile of the potential and actual helipads [this might have been achieved with the Hot Export, the many attempts are all blurring together now]
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possibly download a shapefile of other features
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At 10-05-2015 10:33 Sunday, Michael wrote:
Hi Spring,
Am 10.05.2015 um 10:47 schrieb Springfield Harrison:
Further bad news, trying to download OSM through JOSM yielded the following message:
/The OSM server 'api.openstreetmap.org' reported a bad request.
The area you tried to download is too big or your request was too large.
Either request a smaller area or use an export file provided by the OSM community.
I am afraid but this is standard behavior in any editor. Basically this is not the way to go if you actually want to download OSM data for consumption.
/Does this process usually work? Is it not possible to simply get a shapefile
of this information and avoid all the multiple file type rigmarole?
If you actually want a shapefile for all of Nepal I would recommend using one of the available downloads listed on https://wiki.openstreetmap.org/wiki/2015_Nepal_earthquake#Exporting_OpenStreetMap_data
But if you are only interested in some feature you should have a look at Overpass Turbo. This allows to download filtered results. http://overpass-turbo.eu/s/9hb is a sample query for aeroway=helipad in the area showed in the map. But unfortunately this will not yield shapefiles. Also the query language requires to go through some learning curve if you want to create a bit more complex queries.
Cheers,
Michael (user Ohr)
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