update various tutorials

Author: boriskaus

docs/src/assets/img/Tutorial_LaPalma.png

@@ -130,11 +130,7 @@ The result is shown here, where the previous points are colored white and are a
 ![DataPoints_Moho_surface](../assets/img/Tutorial_MohoSpada_Surface_Paraview.png)
 
 ## 5. Julia script
-The full julia script that does it all is given [here](https://github.com/JuliaGeodynamics/GeophysicalModelGenerator.jl/tree/main/tutorials/Tutorial_MohoTopo_Spada.jl). You need to be in the same directory as in the data file, after which you can run it in julia with
-
-```julia
-#include("Tutorial_MohoTopo_Spada.jl")
-```
+The full julia script that does it all is given [here](https://github.com/JuliaGeodynamics/GeophysicalModelGenerator.jl/tree/main/tutorials/Tutorial_MohoTopo_Spada.jl).
 
 ---
 

docs/src/man/Tutorial_MohoTopo_Spada.md

@@ -2,16 +2,14 @@
 
 The main data structure used in GeophysicalModelGenerator.jl is `GeoData`, which contains info about the `longitude`,`latitude`, and `depth` of a data set, as well as several data sets itself.
 We also provide a `UTMData`, which is essentially the same but with UTM coordinates, and a `CartData` structure, which has Cartesian coordinates in kilometers (as used in many geodynamic codes). If one wishes to transfer `GeoData` to `CartData`, one needs to provide a `ProjectionPoint`.
-For plotting, we transfer this into the `ParaviewData` structure, which has cartesian coordinates around the center of the Earth. We employ the `wgs84` reference ellipsoid as provided by the [Geodesy.jl](https://github.com/JuliaGeo/Geodesy.jl) package to perform this transformation.
+For plotting, we transfer this into the `ParaviewData` structure, which has cartesian coordinates centered around the center of the Earth. We employ the `wgs84` reference ellipsoid as provided by the [Geodesy.jl](https://github.com/JuliaGeo/Geodesy.jl) package to perform this transformation. 
 
 ```@docs
+GeoData
+CartData
 UTMData
 ParaviewData
-CartData
 LonLatDepthGrid
 XYZGrid
 ProjectionPoint
-```
-
-
-GeoData
+```

docs/src/man/datastructures.md

@@ -23,7 +23,26 @@ GeoData
   depth ϵ [ -3.8725 km : 4.2495 km]
   fields: (:Topography,)
 ```
-The data is available in different resolutions; see [here](http://gmt.soest.hawaii.edu/doc/latest/grdimage.html) for an overview. Generally, it is advisable to not use the largest resolution if you have a large area. 
+The data is available in different resolutions:
+| Dataset                 |   Resolution |   Description                                               |
+|:----------------        | ------------ | ----------------------------------------------------------- |
+| "@earth\_relief\_01s" |	1 arc sec 	 | SRTM tiles (14297 tiles, land only, 60S-60N) [NASA/USGS]    |
+| "@earth\_relief\_03s"	|   3 arc sec	 | SRTM tiles (14297 tiles, land only, 60S-60N) [NASA/USGS]    |
+| "@earth\_relief\_15s"	|  15 arc sec	 | SRTM15+ [David Sandwell, SIO/UCSD]                          |
+| "@earth\_relief\_30s"	|  30 arc sec	 | SRTM30+ [Becker et al., 2009, SIO/UCSD]                     |
+| "@earth\_relief\_01m"	|   1 arc min	 | ETOPO1 Ice surface [NEIC/NOAA]                              |
+| "@earth\_relief\_02m"	|   2 arc min	 | ETOPO2v2 Ice surface [NEIC/NOAA]                            |
+| "@earth\_relief\_03m"	|   3 arc min	 | ETOPO1 after Gaussian spherical filtering (5.6 km fullwidth)|
+| "@earth\_relief\_04m"	|   4 arc min	 | ETOPO1 after Gaussian spherical filtering (7.5 km fullwidth)|
+| "@earth\_relief\_05m"	|   5 arc min	 | ETOPO1 after Gaussian spherical filtering (9 km fullwidth)  |
+| "@earth\_relief\_06m"	|   6 arc min	 | ETOPO1 after Gaussia30n spherical filtering (10 km fullwidth) |
+| "@earth\_relief\_10m"	|  10 arc min	 | ETOPO1 after Gaussian spherical filtering (18 km fullwidth) |
+| "@earth\_relief\_15m"	|  20 arc min	 | ETOPO1 after Gaussian spherical filtering (28 km fullwidth) |
+| "@earth\_relief\_20m"	|  20 arc min	 | ETOPO1 after Gaussian spherical filtering (37 km fullwidth) |
+| "@earth\_relief\_30m"	|  30 arc min	 | ETOPO1 after Gaussian spherical filtering (55 km fullwidth) |
+| "@earth\_relief\_60m"	|  60 arc min	 | ETOPO1 after Gaussian spherical filtering (111 km fullwidth)|
+
+Generally, it is advisable to not use the largest resolution if you have a large area. 
 
 #### 2. Save
 Transforming this to Paraview is a piece of cake: