2
votes
1answer
90 views

Change the projection at runtime (OpenLayers)

How do I change the projection on an existing Map object? I'd like to allow a user to switch between cylindrical (EPSG:4326) and custom-declared projections with the click of a button.
1
vote
1answer
88 views

cannot get EPSG of bounding box

I use openlayers 2.12. I created a form where the user can insert a bounding box, to insert to the database a new borough. To check the EPSG of the borough I tried the following //ba bb bc bd came ...
2
votes
0answers
128 views

Is the postgis layer option in qgis 2.12 Lyon two way? Was the spit plugin built in?

I am trying to install Postgresql with Postgis on a remotely accessed terminal only installation of Ubuntu 14.04 that I want to use to connect to QGIS 2.12 and hopefully have a two way transfer ...
4
votes
3answers
650 views

How to find Bounding Box given 4 Lat/Long and Bearing? [duplicate]

I need to find a bounding box given 4 lat/long points and a bearing (as seen in the example picture). I always know which two points are lined up by the bearing (1 and 2 in the example), so I will ...
2
votes
0answers
62 views

Problem converting KML file to .lyr [closed]

I have a problem in converting KML files into lyr ones with ArcGIS 10. I do all the steps perfectly but the conversion fails and the red check mark appears. It is surprising that when I repeat the ...
4
votes
1answer
346 views

Why should I use the AMD style deceleration in ArcGIS JS API?

It seems to me like this: var point; require(['esri/geometry/Point'], function(Point) { point = new Point(); } does the same thing as: var point = new esri.geometry.Point(); Is there any ...
4
votes
1answer
388 views

Properly deal with broken project data source Analyze Errors when publishing Geoprocessing Service (Python / ArcGIS Server 10.2)

When publishing a geoprocessing service, I noticed that arcgis does not like to see: os.path.join(os.path.dirname(__file__), 'projections') This line seems to throw an broken project data source ...
1
vote
2answers
2k views

how to do change detection in ERDAS

I'd like to ask a really simple question. I want to obtain the size of unchanged, decreased, and increased area etc (just like shown in image below) from 2 classification images in 2000 and 2007. How ...
4
votes
1answer
341 views

Has anybody done performance benchmarks between C++, C#, and Java ArcGIS Server Object Extensions? [closed]

Has anybody done performance benchmarks between C++, C#, and Java ArcGIS Server Object Extensions? I'm wondering writing lower-level code translates to better performance.
2
votes
0answers
147 views

How can I create planar slices of a 3D object to quantify voids?

We are trying to quantify the void space in a 3D object, very similar to measuring the holes in cube of swiss cheese. I need to measure cross sectional areas and study the shape of the voids and we ...
2
votes
3answers
3k views

Viewshed / Line of Sight analysis- as a batch process?

I wish to carry out a line of site analysis similar to the subject in here (preferably within QGIS): Visual Impact Assessment in QGIS or GRASS Scenario: I have two points, A and B. Point A is a ...
1
vote
0answers
95 views

raster-derived KMZ cannot display in google map api v3

I got some raster(tiff)-generated KMZ files, but they cannot be displayed at all in googe map api v3. However, all of my shapefile-generated KMZ files can be displayed properly. Anyone faced the ...
3
votes
0answers
73 views

How to create a custom enterprise QGIS installer with plugins and symbols?

I am looking at installing QGIS at a company level. I would like my installer to install specific plugins, and add our company map symology. Are there any ways to do this? I have seen post about ...
2
votes
2answers
689 views

Extract a record by name in pyshp?

I would like to extract a named subset of the text records from a shapefile using Python/pyshp. Is there a clean/efficient way to do this? Ideally I'd like to use dictionary-like access such as: ...
1
vote
1answer
294 views

How to distinguish SRTM from DTED using C#?

Does anyone know how to easily distinguish between SRTM vs DTED programmatically without opening file metadata header? both are .dt1 or .dt2 extensions.
1
vote
0answers
272 views

ArcMap 10.1 and MapProxy: what is the differense between WMS, WMTS and “Layer.OSM” [closed]

On Ubuntu I have PostgreSQL, postgis, renderd, mapnik, mapproxy. 1) I have OSM. It is rendered by Mapnik. 2) Then I have MapProxy. So I have this OSM by WMS protocol. 3) I also can have this OSM ...
2
votes
1answer
109 views

How to handle URLs longer that 2048 chars in JSAPI v2.7 and ArcGIS 10.2

In ArcGIS Server 9.3 and JavaScript API v2.4 there was need to set proxy.config in ASP.NET in order to handle requests to REST map services having more than 2048 characters in the URL as parameters. ...
3
votes
4answers
3k views

Postgis shapefile loader 2.1 error: dbf file can not be opened

The .shp, .dbf and the rest of files are fine, I open them in QGIS, AGOL with no problem. In fact, I've tried 3 different layers, and get always the same error. Anyone can please help, as I really ...
1
vote
0answers
171 views

Qgis-Web-Client - Windows - Red Screen

Well, I'm a Windows user and a newbie with Web mapping technology, but I've had success with qgis server and the "getmap" and "getcapabilities" work well. Now I'm trying to have the same success with ...
1
vote
1answer
70 views

Transform an Irish grid reference (29903) into UK grid reference (27700) on insert

I have an insert script to input several hundred points, however some of the points use the Irish Grid Reference system. I have separated these out however was unsure how to convert or transform? ...
1
vote
0answers
136 views

QGIS Points in Polygon Crashes

I have a layer of points that are spread out in different areas. I created a polygon layer for each area, and tried to count the number of points in each polygon using Vector > Analysis Tools > ...
3
votes
1answer
249 views

Use a Tiledmap service as basemap instead of an Arcgis.com map in AMD style coding

How will I define a arcgisTiled map service as the base map (instead of “topo”) as against using arcgis.com map services while defining a new map in AMD style? map = new Map("map", { ...
3
votes
1answer
89 views

How to combine several datapoints in one location to a single point varying in size accordingly?

This might be a very simple thing, but I just can't figure it out how to do it in QGIS (alternatively I'm also grateful for explanations for ArcGIS). I have a fisheries dataset with multiple catches ...
1
vote
1answer
117 views

Can't get osm2po to work

I have downloaded osm2po 4.7.7 but when trying to follow the instrutions in either the documentation but I'm not able to access the map in my browser on http://localhost:8888/Osm2poService. What I ...
1
vote
1answer
168 views

Microsoft Visual C++ Crash when build qgis 1.8.0 Windows 7 64bit

I have a problem building the source of qgis1.8.0 in Windows 7 64bit. i am trying to follow this instructions in this page: ...
4
votes
1answer
433 views

Historical U.S.G.S. Georeferencing

I have downloaded a historical USGS map that is suppose to be a geoPDF. My understanding is that QGIS cannot directly read geoPDF's. I have not had any luck in converting it to a geoTIF in order to ...
2
votes
1answer
79 views

ArcGIS layer format

am I correct in saying that the ArcGIS layer format for styling maps (*.lyr) is not an OGC approved format? And this is the reason that QGIS cannot read the *.lyr files? Thanks Antonio
1
vote
0answers
41 views

QGIS 2.0 have a Legend Limiter feature? [duplicate]

I found this old post (concerning QGIS 1.x) Is ther a Legend Limiter in QGIS? and was wondering whether this had been solved in QGIS 2.0. Is there a way of only showing the attributes in the legend ...
4
votes
1answer
296 views

How to change the settings for where ArcGIS splits world data

I have a world map made up of 6 shp files. All the files and the data frame are set to WGS84. The way Arc 10 and 10.1 decides to display the files, it splits Russia into 2. The majority of Russia ...
2
votes
1answer
465 views

How can I create a WFS from netCDF file(s)?

Currently I'm working on a project that uses OpenLayers and Geoserver to view data from a postGIS server (both on a map through a WMS, and as data through a WFS). Now, I'd like to be able to compare ...
2
votes
1answer
451 views

ArcGIS 10.2 Copy Rows error

I'm very confused by this one. I have run a polygon neighbors analysis in ArcGIS 10.2 and appended some data from another table to help me whittle down the neighbors list before my next action. So I ...
1
vote
0answers
69 views

Selecting a rectangle box from a raster tiled table in PostGis 2.1

I am new to PostGIS as well as SQL queries for rasters. I have imported a raster .tif file into PostGIS with tiles. I would need to select a bounded rectangle from within this raster using SQL ...
1
vote
0answers
732 views

How to get polygon coordinates for Google Map from .poly files (preferably in nodejs)?

I have .poly files with polygons of countries. I want to use those polygons to make Google Map polygon layers. How may I read lng and lat points of polygons from those poly files? They look like ...
1
vote
1answer
324 views

Creating Polyline from GML using PyShp?

I have a problem in creating some polylines in one Shapefile with PyShp 1.2. The plan is to read a GML file containing LineStrings and create a shapefile. The theory is clear, but the realworld is ...
1
vote
0answers
388 views

how to create the Layer Properties button as geoexplorer?

I was in the debug mode.And I create a Layer Properties button ,but it is only show the title. the code for it, * @require plugins/LayerProperties.js -------------------- { ptype: ...
1
vote
1answer
675 views

basic question about mapnik

I am new in mapnik, and I found mapnik at OSM wiki page. And I am interested in it, but I have some question. 1 the mapnik work scope It seems that it is a library for map rendering(creation), ...
3
votes
1answer
2k views

My GeoJson will not display on a Vector Layer in Openlayers

I have geoJson from the the USGS that I am downloading to my server. It validates just fine with geojsonlint. When I past the JSON into this Openlayers example it says it is bad input json. My Code ...
3
votes
1answer
174 views

Problem with projection in layer

I'm having problems with visualizing a layer which is in EPSG:4326 Apparently the geometry looks perfect, but I don't know why, it's not in real coordinates. I have projected it to 4326 with QGIS, ...
4
votes
2answers
2k views

How to Select By Attribute and Select By Location simultaneously?

Is there an existing tool that would allow to select by attribute and location simultaneously (or near simultaneously) in ArcGIS 10.0+? Assume the data is stored in a file geodatabase, but could be ...
3
votes
1answer
2k views

How to convert to Australian Height Datum from Google Earth elevation?

I am trying to figure out how to convert from Google Earth elevation to Australian Height Datum (AHD). Google Earth's elevation / altitude is based on The vertical component (altitude) is measured ...
1
vote
1answer
212 views

Kernel Density output labeling

I have been looking for a way to try and make the output of the Kernel Density function in ArcGIS for Desktop make a little more sense to our administration. I ran the function on a sample dataset ...
2
votes
2answers
1k views

Spherical Mercator projection invented by Google and not conformal?

I had some certitudes on the Google Spherical Mercator also known under EPSG code 900913 and 3857 before looking at this presentation, I was sure that this projection was in the Mercator family (so ...
2
votes
0answers
39 views

How successful are current metadata implementations in achieving its objectives

Metadata infrastructure is well established as an essential practice within the GIS community. Quoting from the FGDC: Metadata helps people who use geospatial data find the data they need and ...
1
vote
0answers
87 views

What is the best way to handle geometries between Python functions?

What is the best way to handle geometries between different Python functions? For example: I have a function that exports a line from grass.script. The line will be a parameter of another function ...
2
votes
1answer
730 views

OpenLayers removing/adding marker (airplane): update the orientation based on lat/long (next point in database)

The code below I have is working great. I'll try to explain it in a few lines (btw you can view it here http://codeshare.io/9Z1BE): -there's a marker on the map. The lat long is returned as json from ...
1
vote
1answer
35 views

Convert Embeded Graphics to Simple Graphics, ArcGIS

Is there a way to convert an embedded graphic in an ArcMap document, to a non-embedded graphic? I have a number of graphics of little trees. They were embedded into an mxd I have and I want to convert ...
2
votes
2answers
1k views

MSSQL Data Not Showing Up in QGIS

I started using QGIS a few weeks ago. I've been able to create some very nice maps with it. I've used the OpenLayers plugins to bring in different basemaps, I've brought in shapefiles and connected ...
1
vote
4answers
556 views

Python script to open many small images in QGIS

I have access to about 1000 satellite images that covers my country. Each of them is associated to a smaller image that is used for browsing the real deal. I would like to write a script that will ...
1
vote
2answers
2k views

Could not load file or assembly : ESRI.ArcGIS.ADF.Local.dll

i worked in an application vb.net , arcengine : i copy the project source and i paste it in other Machine , Ooops i can't compile it , Error is : Error 1 Could not load file or assembly 'file :/ / / ...
1
vote
1answer
226 views

“Binning” polygons in QGIS

I've got a block-level census dataset that I am attempting to aggregate using a 2-mile grid. Basically, I want each grid cell polygon to have a value equal to the sum of the total population of each ...

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