make gdal dep optional

.github/workflows/python-publish.yml

@@ -19,7 +19,7 @@ permissions:
 jobs:
   deploy:
 
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-22.04
 
     steps:
     - uses: actions/checkout@v3

.github/workflows/python-test.yml

@@ -15,7 +15,7 @@ jobs:
 
   test-ubuntu:
 
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-22.04
 
     strategy:
       matrix:

docs/source/how_to_use.rst

@@ -144,6 +144,8 @@ Before uploading ``SLD`` file, please check the version of your sld file. By def
 Creating and applying dynamic styles based on the raster coverages
 ------------------------------------------------------------------
 
+**WARNING:** As of version 2.9.0, the required dependency ``gdal`` was converted into an optional dependency. Fresh installations of this library will require that you then install ``gdal`` yourself with ``pip install gdal``.
+
 It is used to create the style file for raster data. You can get the ``color_ramp`` name from `matplotlib colormaps <https://matplotlib.org/3.3.0/tutorials/colors/colormaps.html>`_. By default ``color_ramp='RdYlGn'`` (red to green color ramp).
 
 .. code-block:: python

geo/Calculation_gdal.py

@@ -4,6 +4,8 @@
     from osgeo import gdal  # noqa
 except ImportError:
     import gdal  # noqa
+except ImportError:
+    raise ImportError("Package `gdal` is required to run this function. Install it with `pip install gdal`.")
 
 
 def raster_value(path: str) -> dict:

geo/Geoserver.py

@@ -8,7 +8,6 @@
 from xmltodict import parse, unparse
 
 # custom functions
-from .Calculation_gdal import raster_value
 from .Style import catagorize_xml, classified_xml, coverage_style_xml, outline_only_xml
 from .supports import prepare_zip_file, is_valid_xml, is_surrounded_by_quotes
 
@@ -1611,6 +1610,9 @@ def create_coveragestyle(
         This function will dynamically create the style file for raster.
         Inputs: name of file, workspace, cmap_type (two options: values, range), ncolors: determines the number of class, min for minimum value of the raster, max for the max value of raster
         """
+
+        from .Calculation_gdal import raster_value
+
         raster = raster_value(raster_path)
         min_value = raster["min"]
         max_value = raster["max"]

geo/__version__.py

@@ -4,4 +4,4 @@
 
 __author__ = "Tek Kshetri"
 __email__ = "[email protected]"
-__version__ = "2.8.3"
+__version__ = "2.9.0"

requirements.txt

@@ -1,6 +1,5 @@
 pygments
 requests
 seaborn
-gdal
 matplotlib
 xmltodict