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| bio | website | |
|---|---|---|
| location | Germany | |
| age | ||
| visits | member for | 8 months |
| seen | yesterday | |
| stats | profile views | 24 |
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2d |
answered | Get pixel value from a raster in a xy table |
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2d |
revised |
Get pixel value from a raster in a xy table typo |
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2d |
revised |
Get pixel value from a raster in a xy table add links to ArcGIS tools |
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2d |
answered | Get pixel value from a raster in a xy table |
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May 21 |
comment |
Convert DHDN Bessel 1841 to latitude/longitude Your coordinates belong to a projected coordsystem. The link pastebin... shows this term: PROJECTION_MDV What projection is this? I do not know the projection MDV. |
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May 16 |
comment |
What is a good way to share a GeoDatabase over the internet? In addition to Compacting (proposed by @Chad Cooper) you can use ArcGIS Compressing to reduce storage size. |
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May 16 |
awarded | Civic Duty |
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May 15 |
awarded | Nice Question |
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May 15 |
accepted | Why do we use the terms “longitude” and “latitude” for a spherical body? |
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May 15 |
asked | Why do we use the terms “longitude” and “latitude” for a spherical body? |
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Apr 29 |
awarded | Constituent |
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Apr 26 |
comment |
Esri Technical Certification: Arc Gis Desktop esri offers 2 instructor-led courses (not online courses) that cover all fields of ArcGIS Desktop certification exams: Skills Review for ArcGIS Desktop Associate and Skills Review for ArcGIS Desktop Professional |
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Apr 22 |
answered | How to make digitization more detailed afterwards with QGIS? |
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Apr 17 |
comment |
Propose a new location for Watch Tower using Viewshed Analysis As @Baltok said: First answer this question: What are the most important factors for this watch tower? (1) I do not understand why a (tourism ?) watch tower should within 500 m of a river. (2) What do you mean with ...it will not giving me desired visible area? Is there a place which must be seen from the tower? |
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Apr 17 |
comment |
Propose a new location for Watch Tower using Viewshed Analysis the idea of to considering tree height is: if the trees are higher than your tower you will see noting. If you have a good potential place (= height elevation or a ridge) but there is a forest with large trees (e.g. 70 feet) at this place it makes no sense to build a tower of 50 feet. If the tower is lower than the trees at the same place you will only see branches and leaves. |
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Apr 17 |
comment |
Propose a new location for Watch Tower using Viewshed Analysis The approach of @Erica is good. Here are a few additions: (1) instead of using high elevations you can also use ridgelines. To find the ridgelines you can compute a flow direction grid. From the flow direction grid compute a flow accumulation grid. Use the pixel where the flow accumulation is zero – these pixel are the ridgelines. (2) if you have a dataset from which you can estimate the tree height: ignore all areas as location for a tower where height of tree is more than height of tower (50 feet or 15.24 meter). |
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Apr 16 |
comment |
What does 'projected bounds' and 'WGS84 bounds' mean in the definition of a CRS (on spatialreference.org)? @mkennedy thanks for this information. can you give me a link to the source of this information? (I can not find information about CR 2005.140 that states that the area of 2126 has changed) |
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Apr 16 |
awarded | Caucus |
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Apr 15 |
accepted | What does 'projected bounds' and 'WGS84 bounds' mean in the definition of a CRS (on spatialreference.org)? |
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Apr 15 |
comment |
What does 'projected bounds' and 'WGS84 bounds' mean in the definition of a CRS (on spatialreference.org)? @whuber: the ‘CRS area of use’ and the ‘polygons’ in epsg.org for UTM 31, UTM 32 and UTM 33 are quite useful. The bounds for UTM 31 and UTM 33 at spatialreference.org are quite useful too and are the same as in epsp.org. But the bounds for UTM 32 are at spatialreference.org (and Autodesk) are not useful. I suspect an error at spatialreference.org (and Autodesk)!? |
