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1answer
67 views

Adjusting Z Units on a DEM

I am learning how to use ArcHydro and attempting to change the Z Units because I get a warning message saying the Spatial Reference Doesn't Match. The DEM was in Meters, and I adjusted the Z Unit to ...
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0answers
83 views

How do I set the composer layout units to inches?

I open an new composer and select ANSI A for my paper. The notation after the name is "Letter; 8.5inx11in", but the width and height are displayed in mm, and the units selection is grayed out, so I ...
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0answers
39 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
435 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
575 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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17 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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88 views

changing unit of area from unknown unit to square meters

I am using Qgis 1.8 and I have this polygon.Now I wanted to know the area of this polygon and i have used field calculator and it shows my area as 651692439.under general tab crs is : EPSG:4326 - WGS ...
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69 views

change unit while outputting raster to ascii

I am having a problem with outputting ascii from raster file. I've reprojected and set map unit to meter in ArcMap. I've also set the output environment-ish parameters like output projection, x-y ...
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190 views

How to change Editor Units to Feet for COGO Traverse?

I am in the Editing Options and looking for the place to change the Units to Feet from Decimal Degrees. I have tried going into my data frame properties and changing the display units to feet but that ...
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578 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 ...