gdal

I'm a beginner at programming and get pretty confused when trying to use external libraries. I have my maps in shapefiles that I convert to GeoJSON using the website Mapshaper.org, and only then can i read the map from my Java application. I want the user to be able to import a shapefile directly so I found out about GDAL ogr2ogr that has Java bindings , and can make this conversion with a single command such as: $ ogr2ogr -f GeoJSON -t_srs crs:84 [name].geojson [name].shp but I have no idea how to use this from my program. Can someone provide me with an example of how to implement this? How

I've done this a dozen times before, but something isn't working this time.. Following the docs: https://docs.djangoproject.com/en/1.11/ref/contrib/gis/install/#windows I'm trying to set up GeoDjango on a Windows machine (this one is a virtual windows 10 set up on paperspace.com). There seems to be a problem with my PATH settings, but I can't figure out what it is. I've run the commands highlighted in the instructions. I've checked my PATH variables and everything seems ok. I've tried pointing them to both the 32-bit and 64-bit versions of OSGeo4Win. Regardless, I get the following output

Given a GIS raster with elevation data, How to design a topographic map in D3js ? Is there any example of relief / topographic maps of cropped lands made using D3js ? Not working: I explored the posibility of .tif > gdal_contour.py > .shp > topojson > d3js without success. I use a makefile which contain all my commands. As my area of interest (France) is a crop of land areas, the gdal_contour.py approach generates broken isolines which does NOT create closed polygons. Also, the SVG end result fails. The only example of D3 topographic map I know is about Iceland , which, as an island, avoid

Clarification: I somehow left out the key aspect: not using os.system or subprocess - just the python API. I'm trying to convert a section of a NOAA GTX offset grid for vertical datum transformations and not totally following how to do this in GDAL with python. I'd like to take a grid (in this case a Bathymetry Attributed Grid, but it could be a geotif) and use it as the template that I'd like to do to. If I can do this right, I have a feeling that it will greatly help people make use of this type of data. Here is what I have that is definitely not working. When I run gdalinfo on the resulting

I've been trying to install GDAL on Python 3.6.5 (64-bit) on Windows for the past hour, and nothing works. I've visited some questions on SO, watched a video on YT, but none of them applies to my situation (which there's nothing special about it). Can someone provide a step-by-step solution, preferably a tested one, so I can figure out what exactly I'm doing wrong? I'm willing provide any OS setting info/screenshot if necessary. Update: I'm trying to install GDAL to convert TIF (16-bit) files to JPG or PNG. Although I managed to install GDAL with the second method (at second try), I could not

I'm working with the ESA's landcover raster layer and ultimately want to display that data for the globe in a Leaflet Shiny app. Rendering such a massive file is impossible, so I've decided to create map tiles to display the data. Creating the tiles was simple--I used the gdal2tiles tool in QGIS. Here's a quick look of the output, which is in a local directory on my computer: When I click the leaflet.html file , the tiles are rendered in my browser, like so: Obviously the tiles are in working order. The problem is that I don't know how to render these tiles in Leaflet for R. I tried following