For questions regarding the increments used in measuring values.

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24 views

How to do unit conversion on a Terrain dataset?

I was wondering if there is a way to change the elevation units of a Terrain dataset (from example from meter to feet). Any idea/guidance is much appreciated.
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28 views

Hydrology Analysis via SAGA - what is the unit?

I did a couple of analysis via SAGA about an area in Iceland...I've never worked with SAGA before, could anyone tell me what Units the numbers in the legends for "Catchment Area Recursive" and ...
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27 views

Z factor to get the results in square meters and cubic meters?

I have a DEM surface in WGS 1984.I want to calculate surface area and volume in different elevations.I wonder for example If I want to measure the area and volume below some height how shall I set the ...
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0answers
31 views

How do you change the map units returned on ArcGISRuntime 10.2.4 for .NET

I am working on a project that requires the frequent usage of feet as the expected unit of input and output. We're using the .NET SDK with the Esri.ArcGISRuntime.Controls.Mapview in WPF. Basically we ...
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53 views

AutoCAD dimensions units

Not sure if this question belongs (Please tell me if it isn't) I have an AutoCAD drawing that is in centimeters, and every time I insert a dimension, it appears in centimeters (which makes sense ...
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0answers
96 views

How can I obtain the unit of a projection SRID?

Given a projection SRID, is there a way I can obtain the coordinates unit string (meter, degree, ...) ? In PostGIS for example, it looks like it is present in the srtext column of spatial_ref_sys. ...
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0answers
700 views

Distance Matrix in QGIS

Can anyone help me with the distance matrix tool in QGIS? Is there a tutorial about it? It sometimes crashes when I use it and the values that it produces seem strange. I am a beginner in QGIS, so I ...
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0answers
759 views

mixing lon/lat and mercator layers in a MapServer .map file

I have a basic question about my MapServer .map file, which has two layers, each with a different coordinate system, longlat vs. mercator. See my .map file below. If I leave it as shown below, with ...
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41 views

Conversion between semicircles and latitude units

I've recently come across the semicircle unit that is used to describe a latitude and longitude using the maximum precision allowed by a 32-bit number. The conversion here is given as degrees = ...
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43 views

Trouble interpreting zonal statistics as table output

Consider this a follow-up to this question. I transformed a census block group vector map (decided to use this instead of census tracts) into a raster map and generated a kernel density map using ...
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64 views

Surface Volume 3D Analyst tools

I'm using Surface Volume tool (ArcGIS 10.3) to calculate volume of air from a valley. I delimited my DEM (clip tool) and choose Below as plane reference with 603 m as height. The DEM is projected in ...
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24 views

Setting correct units for Near tool?

I need to use the near tool to calculate distances between data points and a stretch of coastline. My problem is that when I run the function, the values that come up in the Field of the points' ...
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162 views

Changing unit of area from unknown unit to square meters

I am using QGIS 1.8 and I have this polygon. I want to know the area of this polygon and I have used field calculator and it shows my area as 651692439. Under the general tab, CRS is EPSG:4326 - WGS ...
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1k views

Convert a decimal degree to meters from the MySQL Spatial GLength

The MySQL Spatial function GLength returns the distance between two points, this distance is in the same unit from the projection. Since I'm using the WGS84 (SRID:4326) the answer will be with ...