Any of a set of two or more numbers used to determine the position of a point, line, curve, or plane in a space of a given dimension with respect to a system of lines or other fixed references.
1
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0answers
119 views
How to get x and y coordinate values of an annotational featureclass
I am able to get the x and y coordinate values from point, polyline, polygon and multipoint type featureclasses. However, I am unable to export x and y coordinate values of an annotational ...
1
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0answers
84 views
Is there a ModestMaps or other flex library for finding the distance between 2 lat/lon coordinates?
I'm using ModestMaps in my Adobe Flex application. Is there a flex library method to calculate the distance between two of my lat/lon coordinates, or am I stuck coding the Haversine by hand? I've ...
1
vote
0answers
103 views
gdallocationinfo from C++?
I need a C++ API to convert x,y Image Coordinates in their native projection to output image pixel,line coordnates. I see the gdallocationinfo documentation, but no API for it.
Where in online GDAL ...
1
vote
0answers
23 views
Translate geographical coordinate [duplicate]
Possible Duplicate:
Calculating Lat/Lng X miles from point
I would like to know how could I translate a geographical coordinate to an specific distance. So for example let's suppose I'm ...
1
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0answers
105 views
Natural Earth: How to get the position of each country?
I've just split the 1:10m Natural Earth countries into individual JSON files which I plan to render and partially stitch back together using RaphaelJS. The 1:10m map is very big (10mb or so) so ...
1
vote
0answers
370 views
How do I convert WSG-84 coordinates to lat/long? [duplicate]
Possible Duplicate:
coordinate convertion: decimal degree to deg-min-sec of lat/long coordinate
I am looking for either an online tool or one that I can download to convert WSG-84 ...
1
vote
1answer
228 views
What datum (reference ellipsoid) does Nasa Worldwind use?
What datum (reference ellipsoid) does Nasa Worldwind use?
I can't seem to find where Nasa Worldwind tells explicitly what datum they use. I need some sort of valid link.
0
votes
1answer
99 views
If the Earth was flat, what unit of measurement would distances between geographic points be represented as?
A whole lot of abstraction- given two longitude/latitude points given from a GPS, I'm using the Pythagorean distance formula to find the distance between them. What unit of length would the distance ...
0
votes
3answers
2k views
Get geometry from coordinates
I have a table with geometry column called point, saved in SRID 4326. I want to get the geometry by its coordinates, but something didn't work. I suspect database configuration or something.
Here is ...
0
votes
1answer
256 views
How to adjust the difference between the coordinate from OpenStreetMap and Google Maps
I have downloaded the OSM from OpenStreeMap that came with all nodes from the map and their respective coordinates. Now I have to plot a node (latitude and longitude) on Google Maps, but all ...
0
votes
2answers
279 views
How to find the proper coordinate reference system with two sets of data using different measurements or too convert one system into another
I have two different entries of data in two different spread sheets. One of the spread sheets uses a coordinate reference system that I have no idea what the units of measurement are. the properties ...
0
votes
2answers
351 views
Is there a way to get Openlayers' KML reader to deal with tessellation?
I'm trying to use OpenLayers' KML reader to display a KML file on a map, but the KML itself has LinearRings tha have a tessellate value of 1. I realize that this is used by google earth to snap the ...
0
votes
1answer
29 views
Drawing on jpg-map image with proj4 (perl)
From the point of view GIS professionals this question will be sure very primitive, but please keep in mind - i'm totally newbie in this area - and this is my 1st question here.
Have several GPS ...
0
votes
1answer
200 views
Make POINT from longitude/latitude coordinates from existing table in PostGIS
I would like to make a POINT using the longitude and latitude columns of an existing table. Here's a link to the documentation of ST_MakePoint.
Here's my table:
CREATE TABLE sysinst.bio (
oid ...
0
votes
1answer
75 views
How to reproject WSF layer created from GeoJSON?
I have a WFS layer:
myVecLayer_disp= new OpenLayers.Layer.Vector("Редактируемый участок",{projection: new OpenLayers.Projection("EPSG:900913")});
And i have feature store:
var protocol=new ...
0
votes
1answer
225 views
To get attribute data of polygon layer by giving Lat/Lon
Is anyone having an idea about how to get attribute data of a polygon layer by giving Coordinates with in that polygon. Here i have tried with these codes..
SELECT * FROM kar_bbmp_198 WHERE ...
0
votes
1answer
124 views
convert GPS to x,y using reference node
i am using sensor nodes and their antenna to calculate GPS coordinates as notation of (degrees/minutes/seconds), i have some question of how to do these things:
how can i convert latitude and ...
0
votes
2answers
57 views
clipping polygons (vector) map with a polygon (vector) layer
A frustrated newbie with QGIS Lisboa version in Windows 7. I want to clip a soil map (multiple polygon vectors) with a single polygon (rectangular polygon vector). The project projection is set at ...
0
votes
0answers
73 views
How to calculate new coordinates by given distance, angle and altitude
I'm using C function to calculate new coordinates by given distance and angle to download google static maps tile by tile to create small map at given zoom. I have troubles because this code works ...
0
votes
0answers
54 views
Can't select Coordinate Display in Status Bar units decimal degrees
Using ArcMap 10.1. I suddenly can't show deci-degrees for the Coordinate Display. Instead it shows deg-min-sec. The "Use these units..." box under ArcMap Options is checked and Decimal Degrees is ...
0
votes
1answer
146 views
Wrong coordinates in data when projecting in world map (qgis) [duplicate]
Possible Duplicate:
How to find the proper coordinate reference system with two sets of data using different measurements or too convert one system into another
I'm fairly new to the GIS ...
0
votes
0answers
99 views
Get the continent given the latitude and longitude [closed]
I want to have certain code such that given the latitude and longitude as input, I want to get the continent which it belongs to? I know I can manually read the coordinates and then see that from the ...
0
votes
0answers
17 views
Why isn't there a 'Print Text Option' on the Answers Pages? [closed]
Why isn't there a 'Print Text Option' on the Answers Pages???
I can't remember all the different options and suggestions without printing them out.
It would be "NICE" to be able to have a ...
0
votes
0answers
63 views
Coordinates move in sql server insert
When I insert a row in TableA in sql server I use this for the geometry column:
geometry::STPolyFromText('POLYGON((x1,y1,x2,y2,x3,y3,x4,y4,x1,y1))', 3007)
You can find the definition for ...
0
votes
0answers
17 views
World country borders in polygon geometry format [duplicate]
Possible Duplicate:
Where do I get territories data?
Is there some source I can get all world countries polygon geometry points with latitude and longitude? I find it for USA states but ...
0
votes
0answers
95 views
MapFish Print latitude, longitude innacuracy?
I'm new to GIS so this may be trivial: I'm using MapFish Print to create some PNG. I have issues to place the viewport. When I use a random GPS coordinate: -20.904522,55.475106 which seem to point ...
0
votes
0answers
36 views
How we add XY coordinates (in the attribut table) from shapefile (points) using QGIS? [duplicate]
Possible Duplicate:
How to get the coordinates in Lat/long from a point layer?
I created a new shape file and edited to add points at specific location. Now, I would like to extract the XY ...
0
votes
0answers
31 views
Calculating ECEF X, Y, and Z velocities between 2 points on Earth [duplicate]
Possible Duplicate:
How do I calculate ECEF X,Y,Z velocities for GPS if I have no satellites
This is my third attempt at explaining what I'm trying to do.
If I have two ECEF X, Y, Z ...
-1
votes
0answers
27 views
Question on Geodesy [duplicate]
How important is it to understand geodesy when dealing with GIS? Also does anyone have recommendations on learning more about geodesy?
