The units tag has no wiki summary.
2
votes
1answer
156 views
What are the units of the calculated area from a raster in decimal degree
I'm trying to calculate area for a raster file which contains 2 layers (0 for unsuitable habitat and 1 for suitable). It's been calculated successfully but I don't know what is the unit of the ...
0
votes
0answers
24 views
Best handheld GPS unit under $500? [duplicate]
I hope this is okay to post here.
I want to do some data collection in my free time which will be hosted on my own website for people to freely download and use.
I obviously want the data to be as ...
1
vote
0answers
162 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 ...
1
vote
1answer
71 views
Which horizontal unit is used on the table of the Profile Tool?
Does anyone knows what horizontal unit is used on the table of the "Profile Tool".
Vertical is in meter but I don't know about the horizontal axis.
Knowing the length of my profile, I tried to divide ...
2
votes
1answer
70 views
How to read the area column in QGIS?
I have few problems understanding how units are managed in QGIS. According to the area column I created for a shapefile, the area of a shape is 0.7727... I just checked on Wikipedia and indeed the ...
5
votes
2answers
256 views
What's the Workflow for buffering in meters/km using WGS84 layers?
I'm a little bit new to GIS, so bear with me a minute....
I'm using QGIS 1.7.4-Wroclaw and working with an SHP layer in WGS84. I want to buffer out to a certain number of kilometers from this layer ...
2
votes
1answer
236 views
How to get $length in meters in QGIS?
I read a lot of posts concerning that subject, nevertheless I cannot solve to problem of getting $length in the field calculator in meters rather than in decimal degress in QGIS.
The CRS of original ...
7
votes
5answers
810 views
Calculate distance in km to nearest points (given in lat/long) using ArcGIS
I have two point datasets in ArcGIS, both of which are given in WGS84 lat/lon co-ordinates and the points are spread across the whole world. I would like to find the nearest point in Dataset A to each ...
1
vote
0answers
54 views
QGIS scalebar shows a wrong scale [duplicate]
Possible Duplicate:
Why does QGIS scalebar show a wrong scale?
I want the scale-bar in QGIS to be in meters/kilometers. Usually it's in degrees, but if I change it to meters it is displayed ...
3
votes
1answer
254 views
Different coordinate system for map project and scalebar?
Is it possible to specify a coordinate reference system (CRS) for the scalebar that is different to the project CRS?
Example: my project CRS uses geographic coordinates (lat/long), the reason being ...
0
votes
0answers
22 views
Set buffer radius in metric units in qGIS [duplicate]
Possible Duplicate:
What is up with QGIS buffer tool units?
A similar question to this one has already been asked QGIS - Change unit of measure from degrees to meters, but none of the steps ...
5
votes
1answer
2k views
What is up with QGIS buffer tool units?
I have been trying to figure this out for a couple weeks now and have had no luck getting the buffer tool to accept anything but degrees as units of measure.
I have found lots of stuff saying the ...
1
vote
0answers
316 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 ...
4
votes
1answer
432 views
Dimensional analysis/conversion problem: Map scale to image resolution (dpi)
Given a map scale of 1:17,200 and a raster whose cell size is 6 inches, what resolution (dots per inch) should I choose when exporting the map to an image in order to maintain the raster's native ...
