0
votes
0answers
2 views

Which parameter and Data Type should i set for spatial reference in new tool in ArcGIS 10.1?

I developed a python script for user defined grid. I want to make a tool from this script. The problem Im facing is to set up parameter for spatial reference. I used GetParameterAsText function for ...
2
votes
2answers
366 views

How do I reproject one raster to match another's in GRASS

I have two raster layers, A and B, which have information about the same location but have different projections and datums. How can I reproject layer A to match the projection and datum of layer B? ...
1
vote
2answers
18 views

How to highlight the number of overlayed lines in ArcMap?

Using ArcMap 10.2, I have a feature class composed of several lines representing bus routes for the same transit line. There are different routes according to schedules. In the image below, each route ...
0
votes
1answer
9 views

What might I do wrong when I tried to load jp2000 file to ArcMap or ArcCatalog?

Every time I want to bring a jp2000 imagery to ArcMap, it has to run it's pyramids before ti can display it. Is there a way around for me to prevent from doing it repeat ?
3
votes
3answers
593 views

Creating DSM and DTM from a LAS using a freeware solution

Is it possible to export a surface and terrain model files from an aerial, LiDAR point cloud (LAS) set? I am using SAGA GIS for very basic operations, but I couldn't find this option (and I have a ...
7
votes
3answers
4k views

How to make geoserver return JSON for WMS GetFeatureInfo?

I wish to get the results of a WMS GetFeatureInfo request as a JSON instead of the table that comes up by default. Out of the box, the only options for the response from a WMS GetFeatureInfo are the ...
1
vote
1answer
9 views

Legend and coloring of markers with plotGoogleMaps in R

I have a data frame (X) that looks like this: code cluster name longt latit 101 1 A -89.6171 35.24992 105 1 B -90.0154 35.10510 106 2 C ...
1
vote
0answers
16 views

Connecting points with lines

I have the centre of some buildings (polygons) and the road network of the area. The road network will be used as a pipe network as well. So I want to connect each building to the main transmission ...
2
votes
0answers
25 views

How to connect centroids of lines sharing the same intersection in QGIS?

I'm looking for a big help to accomplish the following task: I have this street network of the center of Turin (IT), composed by lines representing streets, and black points representing ...
1
vote
1answer
34 views

Along a line create profile/cross-section lines then extract elevation points from them

I know that maybe this question has got an answer, but I need to extract elevation data from a line of a defined length (p.e. 300 meters). Also I want the software (QGIS or ArcGIS) to draw this lines ...
0
votes
2answers
125 views

Invalid geometry message when using Difference tool

I am using the Vector \ Geoprocessing \ Difference tool to get the resulting area when taking a) current ground disturbance away from b) historic total ground disturbance to give c) what has been ...
0
votes
0answers
11 views

Why does one polygon disappear when merging in edit mode?

I want to merge some polygons into one using the merge tool. But when doing so, one of the polygons just disappears (see screenshot 2). Why does this happen? When I use the simplify tool before, it ...
0
votes
0answers
4 views

How to plot a Start and Stop point while drawing a line in CartoDB?

My visualization plots a bunch of lines on a map using CartoDB using a Start coordinate and a Stop coordinate. My data contains geojson formatted coordinates (for each row) I want to show a "Start" ...
0
votes
0answers
7 views

Converting a table to a raster for clipping

I have a series of tables (TAB files) that represent the calculated values for a corresponding .tif image. These tab files have the same number of rows and columns as pixels in the tif images. The ...
0
votes
2answers
78 views

Formulae to convert WGS84 coordinates (B,L) to spherical coordinates (phi,lambda)?

How to convert WGS84 coordinates(B,L) to spherical coordinates(phi,lambda)? I Need Formulae? the thing I'm wondering seems quite simple but I've been searching through internet and library of my ...
1
vote
2answers
36 views

Subtract two daily rasters based on name using ArcGIS ModelBuilder?

I'm not creative today it seems and I haven't found a way to do the following: I have two folders each containing 10,000+ raster files for daily values with names like 19810101_A and 19810101_B for ...
1
vote
1answer
6 views

QGIS 2.6: CRS was undefined defaulting to WGS84

I'm working in a UTM projection and bringing in dxf layers from a different program. The dxf files are all in the correct UTM coordinates already, but when I bring them in I need to change the CRS to ...
0
votes
0answers
6 views

Time Manager coalesce frames with mencoder

I need some guidance putting the exported frames together from Time Manager. I saw your line about mencoder, so I downloaded it along with mplayer, but I'm not sure how to use them. The .exe files do ...
0
votes
1answer
15 views

Replace Domains of ArcGIS 10.1

I need to Replace the Domain on Field level on my Geodatabase. My Geodatabase having multiple features and tables where at each on field one Domain is assigned, I need to replace that Domain and ...
1
vote
1answer
20 views

What's the easiest way to create a point at a specific distance along a line in ArcMap?

I have a road (line) system and would like to place culverts (point) at specific distance along the road. The Construct Points tool creates multiple points spaced out at the users specified interval, ...
2
votes
1answer
305 views

Postgis 1.4 - Obtain closest point of point over polylines layer (without st_ClosestPoint)

I´ve got a polylines layer (pipes) and a points layer (valves) and In Postgis 1.4 I would like to obtain the closest points but exactly on the closest polyline. In other words, i need to locate each ...
1
vote
1answer
28 views

How to get the layer name with a arcpy code

Using the FeatureToPoint tool I've having difficulty calling just the name for file without the extension or path. Here is the part of the script that I'm creating that Im stuck on. eg. ...
0
votes
0answers
7 views

google maps float pin in center and return location

I would like to keep the pin constant in the center of google maps while the user can move the map and zoom around and whenever the map is untouched the current gps location of the pin (in the center ...
-2
votes
0answers
8 views

best algorithm to trace stream network in flat areas

i want to ask you what method do you suggest me for to trace stream network in flat areas and please explain me how to deal with the previous preapration of the DEM regards many thanks
9
votes
2answers
991 views

Why does one part of GML -> KML conversion not work on Google Maps?

Brand new to all of this, not even sure this is the right forum to ask in... I have a client who wants to visualise cancer incidence and mortality rates by local/unitary authority across Great ...
0
votes
0answers
5 views

GRASS: How to remove several categories from a geometry?

I am totally new to GRASS (and have found it difficult to get into that way of thinking and its terminology). I use grass70 under Ubuntu 14.04. I have the following problem which I have tried to ...
0
votes
0answers
9 views

QGIS vector line layer doesnt accept cyrillic letters [on hold]

In QGIS 2.6 vector line layer doesnt accept cyrillic letters, how can i fix this? For polygon it it works fine but for line and point it only gives me set of question marks - ?????
0
votes
1answer
25 views

Building heights above DEM through field calculator

I have a series of building polygons which I would like to convert to a raster illustrating their height. I have the building heights but not their elevation above sea level datum. I have the ...
0
votes
1answer
121 views

Using gdal merge correctly?

Currently trying to use gdal_merge within qgis to stack three raster bands, the command it's showing is like this: gdal_merge.bat -separate -of GTiff -o out.tif "LC80190302014126LGN00_B4.TIF" ...
1
vote
1answer
12 views

What is the parantHWnd parameter used in some ArcObjects methods?

So the parameter parentHWnd appears in a number of ArcObjects methods, such as iExportOperation.ExportFeatureClass. Does anyone know what the parameter is? I can't seem to find any explanation. The ...
0
votes
1answer
16 views

Leaflet Layer Controler

I've got a strange behavior with my map. I wanted to have to basemaps and one overlay. I've defined classes but when I try to change them via LayerControl I only get one same map. Could you please ...
10
votes
3answers
721 views
+500

Applying version control to ArcGIS Models

Version control is an indispensable tool for software development, allowing one to reliably and cleanly step back in time to the last time X did it's job exactly right, or to see what changed between ...
0
votes
0answers
10 views

Selected features are identified improperly from a service,

Selected features are identified improperly from a service, We couldn’t figure out why a service fail to provide correct identification for the selected feature. However, the scenarios below may ...
0
votes
1answer
266 views

Openlayers FramedCloud popup appears in the wrong location

I have an application that is using OpenLayers 2.13.1. It is utilizing a bing basemap and overlaying WMS layers. I am using a FramedCloud popup. I would like the popup to appear where the user clicked ...
1
vote
2answers
17 views

Address Fields in Canadian Municipal Data Model

I'm looking at the Postal address table in Esri's Canadian Municipal Data Model. There are some fields in there I don't understand, and wondered if anyone could help me out. The fields are: ...
0
votes
0answers
9 views

QGIS 2.4.0 CRS reprojection creates empty files and goes generally nuts

I consider myself an intermediate GIS user but keep running in a problem with the newest QGIS version I cannot fix and wonder if it may be a bug or if I am just too stupid. The problem mostly centers ...
1
vote
1answer
11 views

Can't Get my legend on a swipe layer map

I'm having trouble getting a legend on my swipe layer map. I'm new to Javascript and took most of the code from the API reference but can't get the legend to show up for either layers. I'm Hoping ...
1
vote
1answer
127 views

overriding showMap

This code is not working as needed. I need just to make a window with addlayer button. import java.awt.BorderLayout; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import ...
126
votes
16answers
45k views

How do various JavaScript mapping libraries compare?

I am working on a web-based mapping system and I'm trying to figure out the best/most appropriate library to use. There are a few of them about and they each have pros and cons. Even after trying a ...
0
votes
1answer
15 views

How to remove red cross in print composer? [duplicate]

My problem is with the print composer: it shows a huge red cross. I thought it is because of a wrong image format, because there was a smaller cross on one of the images. So I deleted it, then deleted ...
4
votes
1answer
244 views

Data Frame Property options have changed

I have Googled and searched ESRI help files and experimented until I am blue, not to mention reloading ArcGIS Desktop10 for Repair and adding the SP5 to it. I no longer have the options of border or ...
2
votes
0answers
12 views

How to load all items from a template with pyQGIS in QGIS 2.6

Since QGIS 2.6, the LoadFromTemplate method seems not work any more (or works differently?) This is my code to add items in my composer from a template : self.composition = ...
0
votes
1answer
22 views

QGIS abbreviate labels with dictionary

I'm trying to use qgis "expression dialog" for labeling a layer. What I'm looking for is an expression that permits to apply some abbreviation rules on the layer. For now i'm using this CASE WHEN ...
0
votes
1answer
60 views

Qgis map composer shows a huge red cross

I can show this best by a picture: This cross also shows when I export it as raster or pdf. What is it and how can I get rid of it? I am using Qgis 2.4 and the map was done with the help of the ...
2
votes
1answer
321 views

How to display Hidden Linetypes properly when printing from AutoCAD?

I want show the pline type in hidden line type but when I change it I cant show it in printed paper, if I explode it the line are so small that cant show at print, so I want to change the pline to ...
0
votes
1answer
267 views

qgis-web-client stuck on Loading Map

I'm trying to publish a map created in qgis desktop via qgis-web-client. The left hand bar loads with the layers I would expect visible but I never actually see any mapping data just a grey screen ...
1
vote
3answers
264 views

Why is pgrouting driving distance skipping edges?

I have a road network where I do a driving distance operation through pgrouting. This is my SQL: SELECT * FROM driving_distance('SELECT gid AS id,source,target, cost FROM ...
0
votes
1answer
16 views

Problem with connecting remote WMS connection to GeoServer

In my geoserver admin panel I try to connect new stores - remote WMS connection: ...
1
vote
1answer
10 views

How to define layer style for KML layer within OGR Virtual Format?

I have the following OGR virtual format data source, which includes a few GeoJSON files and one KML file: <OGRVRTDataSource> <OGRVRTUnionLayer name="union"> ...
0
votes
1answer
12 views

Many ELSE statement in Expression in QGIS (2.6) [duplicate]

is it possible to have more than one ELSE in the CASE WHEN statement in the Expression builder in QGIS? For example: CASE WHEN "population" > 5000 THEN 'big' ELIF WHEN "population" > 1500 THEN ...

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