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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3answers
5k views

Is there a way to populate a spreadsheet of city names with their latitudes and longitudes from Google Maps or some other service?

I have a long list of cities in the United States, and would like to get the coordinates for each city without looking up each one individually. Is there a way to do this?
2
votes
1answer
81 views

Get feature data from lat long input QGIS

In QGIS, I have a polygon dataset with feature data. I would like to extract data from this dataset using a latitude and longitude. To be more clear, I have a list of 1000 coordinates. I would like ...
1
vote
1answer
151 views

Converting mercator meters without UTM zone?

I've been attempting to extract track information from Humminbird (Side Imaging Sonar) binary files and have hit a stumbling block with the coordinates it provides. The values are apparently in ...
1
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0answers
34 views

Does Unicode Common Locale Data Repository (CLDR) library have rules for longitude/latitude coordinates?

Does the Unicode Common Locale Data Repository (CLDR) library contain rules for formating longitude/latitude coordinates? I am looking for information how coordinates should be formatted in each ...
0
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0answers
26 views

Coordinates of ENVI exported vectors completely reversed when loaded in ArcGIS Desktop?

I have a problem with the coordinates of vector evf in ENVI. I'm working with a well referenced raster doing a supervised classification. The exported vector is completely reversed when loaded in ...
3
votes
2answers
3k views

List of central coordinates for all countries?

I need a list of the central points for all countries: China: lat/long (coordinates of the most central point in China) France: lat/long (coordinates of the most central point in France) etc...
3
votes
1answer
6k views

Making POINT from longitude/latitude coordinates in existing table using 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 ...
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2answers
63 views

Densify a JTS LINESTRING (add points)

I have a LineString I would like to "soften" in a way that if two coordinates (vertices) in the LineString are very far apart, I want to automatically add some coordinates in between. The line ...
1
vote
1answer
57 views

Uses for “Calculate Geometry” option

Is there another use for "Calculate Geometry" aside from calculating area, length and points? I already read the help section ArcGIS Help (10.2, 10.2.1, and 10.2.2) and it's very informative. ...
2
votes
0answers
96 views

Calculating Distances between coordinates

I have perused through the other questions that are very similar to mine but am still having some trouble. I have 75 coordinates in WGS84 that I brought in from an Excel table. They are now on my ...
2
votes
0answers
448 views

Mean coordinates in QGIS

I am using QGIS v 1.7.4 for MAC and I am trying to calculate mean coordinates for a set of points using ftools. To calculate my result I am going to Vector -> Analysis tools -> mean ...
4
votes
2answers
1k views

Point interpolation in route

I have a set of GPS coords with X,Y and Course. I need to interpolate additional points based on the course of each point. It would be a simple line intersection based on lines drawn using the 2 ...
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vote
0answers
67 views

Rounding off coordinates in an SpatialPolygonDataFrame in R

EDIT AFTER COMMENTS After a comment of Whuber (Thank you!) I realized it will probably be most easy to incorporate a round(...) statement within my code to be able to work with less decimals. ...
1
vote
1answer
146 views

Problem with Converting XY Coordinates to LatLon

Here is the function that I use to convert from pixel x,y to lat,lon coordinate: public static Coordinate imageToWorld(Dataset gds, int x, int y) { double[] adfGeoTransform = new ...
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vote
2answers
250 views

How do I convert Geo-Coordinates to Pixel-Coordinates on a Map?

I have an image file that is a Robinson Projection Map of the world. I have a list of geo-coordinates. I would like to find the pixel-coordinates on the map that correspond to my the geo-coordinates I ...
2
votes
2answers
3k views

ArcGIS: Create polygon using file containing point coordinates

I have a text file containing the projected coordinates of the points that define a single polygon. The X, Y coordinates are separated by Tab Is there a tool in ArcGIS similar to "Add X,Y Data" in ...
1
vote
2answers
46 views

Drawing the boundaries on coordinate file and classifying the points

I have imported the data on coordinates in Excel which are classified into 3 types: Class 1, Class 2 and Class 3. When I Add delimited text layer, I get the following output: I have two basic ...
3
votes
4answers
289 views

what is the suitable projection coordinate system for Iran

I am doing analysis for province wise Iran. I am using WGS1984 as my geographical coordinate system, and I do not know which is suitable Projection coordinate system for entire Iran. I feel the UTM ...
1
vote
0answers
53 views

My map is little bit off

I am pretty new in GIS things and i have been learning how to use QGIS. Most of the maps are fine, but yesterday I went to GIS center at my University and I got the maps of my country that I will be ...
2
votes
1answer
34 views

Atributing fields in arcmap and excel

How do I populate a field in ArcMap (and Excel) with only a specific part of another field's attributes? For example: I want to populate the LATDEG field with only the degree part of a latitudinal ...
2
votes
0answers
65 views

Getting XY screen coords from ArcScene 3D point using ArcObjects?

I already know how to convert screen point (X,Y in pixels) to 3D point: ISceneGraph pSceneGraph = m_pSceneHookHelper.SceneGraph; IPoint pPoint; pSceneGraph.Locate(pSceneGraph.ActiveViewer, X, Y, ...
2
votes
3answers
174 views

How to convert PCS based point X/Y into GCS Lat/Lon using ArcObjects

There are so many permutations of questions I've tried to find the answer to my question from various sources, but I have yet to actually find an answer the way that makes sense to me (and works). ...
5
votes
1answer
87 views

How often does Google change the geo-coordinates for a given address?

I geocoded the address "50 Hurt Plaza Southeast, Atlanta, GA 30303" twice. Once on July 28th, 2014 when I got the coordinates: (33.754208, -84.387272) And again today, August 18th, 2014, and got ...
1
vote
1answer
61 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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votes
1answer
38 views

Buffering algorithm [closed]

Does anyone know the algorithm of buffering? I had difficulty in drawing buffers. So I tried many values to acquire 1km buffer. I found value 0.008966 produces 1km buffer. Then I calculated inverse ...
2
votes
1answer
86 views

WorldWind wms services show reversed coordinate in ArcGIS Desktop

I'm adding WorldWind wms services (http://data.worldwind.arc.nasa.gov/wms?) to ArcMap (ArcGIS 10.2.2) but maps are misplaced, looks like they have reversed coordinates (as explained here: ...
5
votes
1answer
82 views

What kind of coordinates are this ones?

I have to map a point using this coordinates: 38 R MF 18852 15799 I can't understand the coordinate system. For sure '38' is the UTM zone number and 'R' is the designation (indicating southern ...
2
votes
1answer
963 views

Getting polygon shapefile node coordinates and point order

I am trying to get the coordinates of each node of a polygon in QGIS. What I basically did is use the following tools: Vector -> Geometry tools -> Extract nodes Vector -> Geometry tools -> Export ...
1
vote
1answer
75 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 ...
3
votes
3answers
1k views

How to export polygon coordinates to CSV (not WKT)?

I am new to QGIS, and I am now trying to export polygon coordinates from a shape file to a csv file, but so far all my attempts have failed. I have found numerous questions and answers about this, but ...
0
votes
2answers
58 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 ...
1
vote
1answer
1k views

How to calculate Distance, Azimuth and Dip from two XYZ coordinates

I have two XYZ coordinates and I would like to calculate the Distance, Azimuth and Dip between them. I have come across a similar question on this site that calculates it the other way around (with ...
1
vote
2answers
34 views

Identifying my coordinates from external datasource

I'm working with data received from an agency outside of my office and two columns in the dataset are labeled 'CompX' and 'CompY'. Here is a sample set pulled from the spreadsheet: ...
2
votes
2answers
411 views

How likely is it that Smartphone Camera GPS coordinates are wrong?

According to the coordinates printed directly on this photo of my late son Kelvin here: https://www.dropbox.com/sc/w6tvwuvbosuh9rk/AADzT-3vDXcFQ9LnKK1BYMZUa ...and the Exif data from the .jpg: ...
0
votes
1answer
74 views

How to create GoogleMaps/OSM hyperlink for given bbox coordinates

I have extracted the bbox coordinates from a shapefile and want to create a hyperlink for google maps respectively OSM. When you click on the hyperlink the map should be zoomed to the bbox extend and ...
1
vote
1answer
453 views

Calculating distance between two sets of Decimal Degree coordinates?

I have coordinates in decimal degrees e.g: point A:Lat,Lng(5.317101667,-2.023303333) and point B:lat,lng(5.317093333,-2.023318333). The altitude in Meters at Point A is 11m and the altitude and Point ...
0
votes
1answer
115 views

Coordinate extraction in a different projection in MapInfo

I have a .TAB file of polyline objects in British Grid Coordinate. I need to extract the end points/nodes of each polyline and find their latitude/longitude (WGS84). Would really appreciate some ...
2
votes
0answers
53 views

Choosing the map scale (1:nnn) for the given raster dimension

Starting points: let define the raster image size, say: 1800x900 pixels I want draw my own raster image map - by drawing polygons e.g. like "draw line from pixel with coordinates x100y100 to pixel ...
3
votes
2answers
1k views

Leaflet: Container coordinates vs Layer coordinates?

What is the difference between map container coordinates and layer coordinates? From what I gathered, the map container coordinates are always relative to the map viewport, and while layer ...
1
vote
0answers
81 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 ...
0
votes
1answer
20 views

Can I upload an LPA file (Long Profile) to QGIS

I have a .lpa file that I'd like to upload to QGIS - Can this be done and if so, how? Thanks!
3
votes
2answers
141 views

Can't find correct coordinate system: UTM83 Zone 15 forcing input in meters; need it to be read in feet

Forgive me, I'm a CAD person, and am very new to GIS. I've searched google and this site extensively for an answer, with no luck. My problem is that I was given a large number of sistered Raster ...
1
vote
1answer
185 views

Translate coordinates in GeoJSON export

I am wondering if there is a way to apply a translation in coordinates for a GeoJSON export. Currently, there are negative coordinate values in my export, which I cannot have. I am trying to use ...
1
vote
3answers
186 views

Copy>Paste from meter to feet coord-sys, and coordinates don't change in ArcMap 10

My dataframe coordinate system is in UTM with linear unit Meter. If I have a Polygon shapefile in a UTM coordinate system with a linear unit of Foot_US and I am sent a shapefile in the same UTM ...
1
vote
1answer
146 views

Correcting coordinates of CAD drawing imported into ArcGIS?

I am having some issues with some CAD drawings that I have imported to ArcGIS. I have a number of CAD drawings where by the features within the drawing have an error in their coordinates. For example, ...
-2
votes
1answer
48 views

How do I get the Coordinates of a shapefile into .csv [closed]

I have followed all the instructions on this site, but my output always shows Area, and Perimeter of each polygon. Am I missing something? Should I be changing a setting somewhere to select ...
1
vote
2answers
173 views

Saving a gml layer does not change coordinates

I am trying to export a gml layer to geojson with lat/lng as the preferred coordinate system. So what I did was a 'save as' on the layer with selected CRS: 'IGNF: WGS84G'. Now I was hoping it ...
1
vote
1answer
61 views

Creating a line from lots of easting/northing co-ordinates

I have hundreds of easting northing points which I need to join as a single line to show a route. How do I import them and get QGIS to automatically turn them into a line?
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0answers
47 views

Is there a way to retrieve/query country data from a shapefile programmatically using map coordinates in GeoTools?

I am using Geotools to parse and draw a shapefile. Now; when I draw that map I receive coordinates with this bit of code for my Flight Line button. void selectFeatures(MapMouseEvent ev) { ...
2
votes
0answers
42 views

Problem with finding point within the box in MongoDB

I'm doing a search within box. It works perfect except only one situation. Let me describe it. Suppose the point has coordinates: (lng:-155, lat:19) If we have box: sw - (-170, 10), ne (29,69) that ...