Add OGC Features Filters tutorial (#13)

* Add OGC Features filtering tutorial

* Update links

Author: geographika

.gitignore

@@ -1,5 +1,7 @@
-workshop/content/site
-.vs/
-# /notes.txt
-workshop/exercises/postgis-data
-notes.ignore
+workshop/content/site
+.vs/
+# /notes.txt
+workshop/exercises/postgis-data
+notes.ignore
+/workshop/exercises/mapfiles/tmp/*
+!/workshop/exercises/mapfiles/tmp/.gitkeep

docker/ReadMe.md

@@ -47,9 +47,9 @@ docker pull geographika/mapserver-workshop:latest
 # docker stop mapserver-workshop
 # docker rm mapserver-workshop
 docker run -it --name mapserver-workshop geographika/mapserver-workshop:latest bash
-docker start mapserver-workshop
-docker exec -it mapserver-workshop bash
 # mapserv -v
+# docker start mapserver-workshop
+# docker exec -it mapserver-workshop bash
 ```
 
 ## Build the Demo Image

workshop/content/docs/advanced/direction.md

@@ -0,0 +1,8 @@
+
+
+```bash
+docker exec -it mapserver /bin/bash
+map2img -m direction.map -o direction.png
+
+map2img -m direction.map -e -1133569.01 6841714.56 -1133466.97 6841780.95 -l "raster flow" -o direction.png
+```

workshop/content/docs/advanced/gdalg.md

@@ -5,7 +5,7 @@
 MapServer can dynamically run a [GDAL Vector Pipeline](https://gdal.org/en/latest/programs/gdal_vector_pipeline.html), and render its output -
 all through a simple Mapfile.
 
-In this workshop we'll use the Tartu roads dataset used in the [Line Styling](../mapfile/lines.md) exercise, dynamically
+In this workshop we'll use the Tartu roads dataset used in the [Line Styling](/mapfile/lines/) exercise, dynamically
 buffer it using GDAL, and display the result in OpenLayers using a MapServer WMS.
 
 This is a simple example of a pipeline, but additional steps can be chained together to create more complex workflows.

workshop/content/docs/advanced/other-projections.md

@@ -189,7 +189,7 @@ const wmsLayer = new ImageLayer({
 
 !!! note
 
-    OpenLayers does not natively support WCS. In this example we use the same approach as in the [Web Coverage Services (WCS)](../outputs/wcs.md) tutorial for testing the WCS protocol.
+    OpenLayers does not natively support WCS. In this example we use the same approach as in the [Web Coverage Services (WCS)](/outputs/wcs/) tutorial for testing the WCS protocol.
     Images are requested as PNGs using the [ImageWMS](https://openlayers.org/en/latest/apidoc/module-ol_source_ImageWMS-ImageWMS.html) class and a custom
     [imageLoadFunction](https://openlayers.org/en/latest/apidoc/module-ol_Image.html#~LoadFunction),
     as displaying GeoTIFFs directly in OpenLayers is not supported without additional libraries.

workshop/content/docs/advanced/raster-pipeline.md

@@ -0,0 +1,16 @@
+# GDAL Raster Pipeline
+
+!!! warning
+
+    This page is currently in a draft form.
+
+
+```
+gdal raster info data/raster/clipped.tif
+
+gdal raster info data/raster/clipped.gdalg.json
+
+
+gdal raster pipeline ! read /etc/mapserver/data/raster/clipped.tif ! color-map --color-map /etc/mapserver/data/raster/color-map-percentage.txt ! blend --operator=hsv-value --overlay [ read /etc/mapserver/data/raster/clipped.tif ! hillshade -z 30 ] ! write /etc/mapserver/data/raster/tmp.tif --overwrite
+
+```

workshop/content/docs/advanced/symbols.md

@@ -10,7 +10,7 @@ In this exercise we'll look at how [SYMBOL](https://mapserver.org/mapfile/symbol
 
 ## Vector Symbols
 
-We've looked at `ELLIPSE`, and `TRUETYPE` symbols in the [Points Styling](../mapfile/points.md) exercise. In this example 
+We've looked at `ELLIPSE`, and `TRUETYPE` symbols in the [Points Styling](/mapfile/points/) exercise. In this example 
 we'll be looking at [Vector Symbols](https://mapserver.org/mapfile/symbology/construction.html#symbols-of-type-vector-and-ellipse) - which
 use vector drawings to define the shape of a symbol.