Installing uMap on Windows

The good news is that it is possible to run uMap server on Windows. However, it is recommended using uMap on a Linux distribution as it will be easier to install, modify, and deploy. While the following steps have been tested on Windows 7, they may work for other versions of Windows.

1. Prepare the Database

This assumes you've installed PostgreSQL.

Create a database called "umap"
Install PostGIS extension in it

##2. Create a directory and a Python virtual environment

Open a Windows command window, and cd to a directory of your choice. You need to create a sub-directory but the name is up to you (it doesn't need to be called "production"):

mkdir production
cd production
virtualenv venv
venv\Scripts\activate.bat

##3. Install GDAL for Python

It is really difficult to install GDAL the "standard" way since it requires compiling GDAL. Instead download an already compiled pip-compatible wheel package file from Unofficial Windows Binaries for Python Extension Packages. Note that cp38 refers to the Python version you are using, so make sure you select the one that matches your Python version for download.

In the command window, install the downloaded wheel package: pip install GDAL-3.0.4-cp38-cp38-win_amd64.whl

You can test the install from the Python command line. From the Windows command window invoke Python:

python

then enter some Python commands:

>>> import gdal
>>> print(int(gdal.VersionInfo('VERSION_NUM')))
>>> exit()

##4. Install uMap

In the Windows command window:

mkdir static
mkdir data
pip install umap-project

Windows Work-Around 1

Setting the UMAP_SETTINGS environment variable doesn't seem to work on Windows, so put the file in umap's fall-back location of \etc\umap\umap.conf :

mkdir \etc\umap
wget https://raw.githubusercontent.com/umap-project/umap/master/umap/settings/local.py.sample -O \etc\umap\umap.conf

Edit the umap.conf file:

Windows Work-Around 2

It might be possible to modify django's libgdal.py (umap installed django as one of its dependencies) to detect the installed GDAL, but until then you can explicitly state the required paths.

Add the GDAL paths somewhere near the top of the umap.conf file (make sure the last part, "gdal300", is the name of the GDAL DLL in its package dir):

GDAL_LIBRARY_PATH = r'C:\temp\production\venv\Lib\site-packages\osgeo\gdal300'
GEOS_LIBRARY_PATH = r'C:\temp\production\venv\Lib\site-packages\osgeo\geos_c'
PROJ_LIB =          r'C:\temp\production\venv\Lib\site-packages\osgeo\data\proj'

And while you're editing umap.conf, add the needed parameters to the DATABASES default object :

DATABASES = {
    'default': {
        'ENGINE': 'django.contrib.gis.db.backends.postgis',
        'NAME': 'umap',
        'USER': 'postgres',
        'PASSWORD': 'postgres',
        'HOST': 'localhost',
        'PORT': '5432'
    }
}

And set umap's paths to where you've created the directories:

STATIC_ROOT = '/temp/production/static'
MEDIA_ROOT  = '/temp/production/data'

Now that the minimal configuration is done, you can do the django-ish portion of the umap install. In the Windows command window:

umap migrate
umap collectstatic
umap createsuperuser

Windows Work-Around 3

Strangely, having the installed umap.exe is not enough. Some script tries to execute "umap" without the ".exe" extension, so here's a hack to make that work:

copy venv\scripts\umap.exe venv\scripts\umap

##5. Run umap server In the Windows command window:

umap runserver 127.0.0.1:8000

You should now be able to open a browser and go to http://127.0.0.1:8000

If you add some features to a new map and try to save them, you will likely see an error in the Windows command window running the umap server. This error is a Python error related to doing os.remove(name) on Windows:

  File "c:\temp\test\venv\lib\site-packages\django\core\files\storage.py", line 303, in delete
    os.remove(name)
PermissionError: [WinError 32] The process cannot access the file because it is being used by another process: 
'C:\\temp\\production\\data\\datalayer\\1\\1\\layer-1.geojson'

Windows Work-Around 4

Edit test\venv\lib\site-packages\django\core\files\storage.py, and comment out lines 302 and 303:

#            else:
#                os.remove(name)

Now adding features and saving should work. Now here's the weird part. Edit storage.py to restore it to it's original state by removing the comment characters you put in. Save the changes, do some more feature editing and saving in your browser. It still works! This may be due to file/directory locking by Windows.

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Installing uMap on Windows

1. Prepare the Database

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