From Wikipedia: In geometry, an angle is the figure formed by two rays, called the sides of the angle, sharing a common endpoint, called the vertex of the angle. Angles are usually presumed to be in a Euclidean plane, but are also defined in non-Euclidean geometry.

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5
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2answers
5k views

How to calculate new point coordinates from distance and angle?

I want to calculate the coordinates of a new point. What I have: The source point coordinates, the distance (meters) and the angle For example: I want to create a point within 100 meters and 45 ...
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votes
1answer
192 views

Estimating Landsat 7 azimuth (heading)

I am trying to understand if the Landsat 7 satellite ETM+ orbit has any significant azimuth or if it could be assumed as 0° (as it is not a pointable sensor). I searched in the web but could not find ...
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votes
2answers
2k views

Compute Angle of a line in conventional bearing

I am trying to compute angle between two lines (line segment) using ESRI (ArcGIS, JS) in conventional bearing (Eg: N29'E) I am using Add Toolbar to draw a line segment where point A is a fixed point ...
3
votes
0answers
65 views

Calculate field of view / angle of a point to a shapefile

I am trying to automate a calculation of the blocked fraction of a field of view from a point to a shapefile. I.e. find α in , such that α / 360 gives me the fraction of the field of view covered ...
3
votes
0answers
95 views

How to digitize 90 degree angles? [duplicate]

Possible Duplicate: How to create polygons with straight lines and right angles in QGIS? In QGIS 1.8 is there a way to digitize buildings etc. with perfect 90-degree angles, Or, edit a ...
2
votes
1answer
1k views

Calculate View Angle

I am looking for the most accurate way of calculating the view angle (Azimuth, Elevation) from a reference point (my location) A to another point B. I have the Lat, Lon, and Altitude for each point. ...
1
vote
2answers
82 views

Calculate actual Landsat image corner coordinates to derive azimuth (heading)

This is the continuation of an unsolved problem I had (see this thread if you like). I have a Landsat image and I would like to estimate the satellite azimuth for my location. As the satellite follows ...
1
vote
2answers
968 views

Calculating angle between two points (according to reference point)?

I need to calculate the angles between two points on ArcGIS. I have ArcInfo License, too. I have 5 points on a diagram. One of them is my reference point. The other four creates angles between each ...
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0answers
205 views

Can I Rotate SVG symbol counter clockwise in Quantum GIS? (Direction East 0 - counter clockwise) [closed]

I'm working in a road signs project. I need the signs layer symbol to rotate according to the value in the angle field, so they could be represented facing the correct orientation. However, the angle ...
0
votes
0answers
42 views

Line to points at bends

I have a pipeline (shapefile) that I am trying to convert to points where the pipeline has a bend in it. I tried to convert the vertices to points in ArcMap 10.1, however this will not work in this ...
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votes
0answers
16 views

Geoserver layer rotation problem

I have a mapping system setup with PostGIS, Geoserver 2.4.1 and OpenLayers 2.12 I am trying to use the geoserver vendor specific parameter "angle" to rotate a layer, and it seems to work fine. ...