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.

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72 views

Finding coordinates of the image corner

I have a .bmp image with a map. For creating image i used a Ingeo 4.4 and function MakeImage() What i know: Height an Width of bmp image dpi Map Scale Image Center's coordinates in meters. What i ...
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1answer
57 views

How can I shift raster layer for making cloud-shadow mask?

I want to make cloud shadow mask in QGIS. I have raster cloud mask and I have to shift it by X,Y coordinates. Is there any easy solution?
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1answer
82 views

What UTM like coordinate system is this?

I have this set of coordinates: 4622580.00000, 503749.00000 They should roughly correlate with 51°01'39.4"N 13°44'44.2"E in Dresden, Germany. At first I thought they might be UTM, but that puts me ...
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0answers
101 views

GRASS and r.viewshed

I'm trying to run the r.viewshed command using co-ordinates held in a .csv file I imported using v.in.ascii. It has over 200 rows and I'm looking to run viewsheds from each line, without doing it ...
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59 views

Finding X,Y off of PDF and input into shapefile [closed]

I have this as the Point of Beginning for a legal description (mineral deed) X,Y (X= 2,614,055.44 and Y= 481,876.17). I did the ADD X,Y with the coordinates at WGS1984. It shoots way off course even ...
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77 views

LLA vs ECEF--which to choose?

I will be providing points in 3D to an external source via XML. One coworker suggests Lat/Long/Alt and another suggests ECEF. We can do either without much trouble. We have an existing product that ...
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122 views

Converting custom grid to OS grid

I have two sets of data, one is in OS coords, no problem there, but the other was set out in about 50 off 10x10 metre grids aligned to a 'feature' on the ground. I do have the OS coordinates of their ...
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86 views

Extrapolate data and district names from map

My data: soil samples in each district. My question: I want to extrapolate from the soil sample's map the names of the districts in which the samples have been collected. I have already found the ...
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204 views

How to define coordinate system and geographic transformation for a CAD drawing?

I am a GIS guy and I occasionally work with CAD files as well. Now I need to know how I can define a coordinate system and a geographic transformation for a CAD Drawing. According to ESRI: "You can ...
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1answer
120 views

Insert geometric data to a column from coordinate values in double precision

Screenshot of database http://wp.me/aIW9p-i0 For table “households”, I want to create two new columns: 1) “Geom”, data type – geometry; 2) “WKT”, data type ‐ text; I am intending to do the following ...
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1k views

convert GPS to XY coordinates

if i have obtain GPS coordinates as Latitude/Longitude, then i need to convert them to XY coordinates, i see this link actually i need to get the Trilateration , in its equation i need the XY ...
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3answers
3k views

Openlayers vector feature coordinates are not transforming,

I have a OpenLayers vector with a single feature [0]. It's coordinates are in the map projection (EPSG:3413) and I want them in WGS84 (EPSG:4326) decimal degrees. I have the following code which ...
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1answer
1k 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 ...
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132 views

Google earth incorrectly rendering coordinates?

My circles are rendering funky on the poles, and along the equator. Here are my coordinates: 158.05553767833,-78.151355482613 152.68654993135,-76.924955252783 147.72303124605,-75.713526831152 ...
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122 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 ...
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190 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 ...
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27 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 ...
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384 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 ...
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1answer
412 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.
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3answers
4k 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 ...
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1answer
117 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 ...
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1answer
40 views

largest area polygon

I have a layer of polygon shapes, I know this could be a quite easy question to answer but I am a beginner and probably I am not using the right concept or terminology when looking at the desktop help ...
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1answer
107 views

How to get from Lat/Lon to this format?

I have twitter data with coordinates such as: [-7.2377761, 112.73091137] I'm working with a python geo library called osgeo. The sample code indicates creating a point like this. point = ...
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2answers
568 views

Find longitude for point between two coordinates with pyproj?

I've written a function to get the longitude of a point of known latitude between two known points (might not be working correctly yet), but I feel like there must be a better way of using pyproj to ...
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3answers
696 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 ...
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2answers
46 views

get center coordinates of a buiding(way)

Using overpass-turbo I got data like this: { "type": "way", "id": 292833530, "nodes": [ 2963934681, 924717449, 2963934682, 2963934683, 2963934684, 2963934685, ...
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1answer
46 views

How to re-reproject coordinates that are coming from GeoServer

I have a GeoJSON as follows: ...
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2answers
62 views

Field calculator fails when computing First X coordinate in ArcGIS10

I have this line in python to compute First X coordinates into the Field Calculator from each polyline: !Shape!.firstPoint.X Then, when I inspected the attributes I see this rare thing: You may ...
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1answer
36 views

ESRI file coordinate confusion

I have a batch of (binary) ESRI files containing 25m resolution raster data. I need to check my interpretation of the OSGB coordinates therein. gdalinfo reports the following for a file containing a ...
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1answer
339 views

Link Google Earth with QGis

I was wondering if it was possible to link Google Earth files (KML, KMZ) to a QGIS project. The main idea would be that if you'd add a point with coordinates in Google Earth, this point would be added ...
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1answer
174 views

Scaling x,y coordinates in proj4

This question was asked before, but without answer. Let's say we have mercator map with given resolution (for simplicity in centimeters). Now let's get coordinates of (lat,lon) = (50, 15): $ proj ...
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1answer
90 views

Get rectangle's coords in php

I'm trying to create a script which i give the center of a rectangle (in coords) and the preferred width and height (in metres) and return me the coords of four angles.Any idea about the ...
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1answer
93 views

How to set feature coordinates to values in attribute table?

I have some shapefiles that were produced programatically, and everything came out okay EXCEPT that the geometry information was not written correctly. The coordinates for each feature are null. ...
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2answers
219 views

Arcpy: calculating a field based on feature class geometry, eg 'if FC ==“POINT” calculate xy coord

I have a script that populates new fields based on user input. I would like it to also add the XY coordinates in DD if the Feature Class is a point feature, else, it moves on to the next command. I ...
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2answers
117 views

Looking for lat/lon for county seats

I'm currently designing a map for methamphetamine labs in my state. Ideally what I need is the center lat/lon coordinates for each county in my state or the lat/lon coordinates for each county seat. ...
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1answer
94 views

How to access the map coordinates show in QGIS status bar?

Is there a way to access the map coordinates show in qgis status bar? I found only this, iface.mainWindow().statusBar().currentMessage() But I know it's not the way. Or is there any way to capture ...
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1answer
184 views

How to convert gps receiver native format to google lat long or XY format

I have received some GPS co-ordinates in the following format like - "17267690N 078279340E".. How to convert the co-ordinates to show it on Google map.
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3answers
567 views

Get Coordinates of selected item on map using ArcGIS Engine

I have IFeatureSelection. Then select from it items by QueryFilter. How can i get coordinates of selected item? (If there are more then 1 object, then select first)? Selected item is Point in ...
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1answer
172 views

MapBasic For Loop ignoring every other row

I have made a loop in MapBasic but is it only updating every other row in the table: My code works from the bottom of the table upwards to generate start and end coordinates for polyline features: ...
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1answer
226 views

Creating points based on coordinates in MapBasic

I am currently working on a MapBasic tool that generates start and end coordinates for a polyline layer. So far I have successfully populated 4 columns in a table (SX, EX, SY, EX) with coordinates of ...
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2answers
172 views

How to add Excel-sheets with meter coordinates to QGIS?

I have an Excel-sheet where the coordinates are in meters. What is the most efficient way of inputting this file to QGIS? There are thousands of files to put so please recommend some straight-forward ...
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3answers
984 views

Seeing lat, lot coordinates in raster and getting pixel value

I am new to QGIS and I have a simple question. How can I get the pixel value at a given latitude and longitude coordinate in a satellite raster image? Related to this, I cannot see the latitude and ...
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1answer
134 views

Plotting a point within a bounding box as a percentage of X/Y

I have two pairs of lat/long coordinates that represent the top left and bottom right corners of a bounding box. I have a third pair of lat/long coordinates representing a point within this bounding ...
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2answers
641 views

A shapefile / boundary coordinates for Bangladesh divisions

Are there any shapefiles on the boundary coordinates for each of the Bangladesh administration divisions? Essentially what I want to achieve is to have the minimum and maximum of the longitudes & ...
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1answer
147 views

Not able to convert GPS coordinates received from a software into Latitude and Longitude

I am working on a software which returns GPS coordinates in this format: Lat : '48684499' Lon : '5203474' I can not understand what type of coordinates are these and not able to convert them into ...
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1answer
402 views

How to convert drawn vector feature from EPSG:900913 to EPSG:4326

My script allows you to drawn shapes on an openlayers map, and then to get the WKT information from that shape, except the returned coordinates are in 900913 and i need them to be in lat/lon. thanks
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1answer
891 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 ...
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2answers
879 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 ...
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2answers
408 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 ...
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1answer
27 views

How to get a PNG image of a polygon with the corner coordinates?

How to get a PNG image of a polygon with the corner coordinates in a separate file? I have access to ArcGIS 10.1 and QGIS 2.8.1. I tried this: http://gis.stackexchange.com/a/30503/50606 , but I get ...