0
votes
0answers
4 views

Where to get GRASS module r3.out.vtk?

I'm looking for the GRASS module r3.out.vtk. It's featured on the GRASS GIS manual : http://grass.osgeo.org/grass64/manuals/r3.out.vtk.html But it's nowhere to be found, and neither are r.out.vtk and ...
0
votes
0answers
11 views

Which direction does the sun rise at the south pole? [on hold]

I am not positive this is the correct StackExchange for this question. I would like to know which direction the sun rises, specifically which direction it sets, at the south pole and at different ...
0
votes
0answers
5 views

Assign Nodes ID to Polylines in QGIS

I want to consolidate data from various layers into a single layer so I can export it for use in an external software program. I am interested in how to selectively combine data from different ...
0
votes
0answers
16 views

differences in distance between shapely and geopy

I am getting totally different distances from shapely and geopy. On one hand - it makes total sense, shapely measures on a plane and geopy measures on a spheroid. But the differences are so dramatic, ...
0
votes
0answers
10 views

Attribute table not updating after QGIS field calculator used?

Using QGIS 2.8.1 i am trying to update an attribute table using the field calculator. its a vector layer of vegetation communities. i am trying to update the area fields in the table. The output ...
0
votes
0answers
27 views

Why does my phone's GPS suffer from “urban canyon” problems in Beijing but not New York?

In a separate question on Travel.SE I asked why my phone's GPS didn't seem to work in Beijing, China. Turns out that it was simply an "urban canyon" problem, and that the GPS did in fact work when I ...
0
votes
0answers
11 views

Mapping Disease Incidence in the Northeast in R

I am trying to map disease incidence by county in states in northeastern states in the US. I have the shapefiles for the entire US but I am having a difficult time deleting the states that I do not ...
0
votes
1answer
18 views

QGIS - save vector poly layer into individual shp files?

Using QGIS v2.8.1, I have a directory of GeoTiff images. Using the raster ‘Tile Index’ plug-in (selecting “location” as the file index), I am able to create perfectly matched vector polys that I can ...
0
votes
0answers
6 views

Change Header/Background Color For Attribute Popup Window (JavaScript Web AppBuilder)

After creating a web app and downloading it using the JavaScript Web AppBuilder for ArcGIS (Developer Edition), I was able to change the site header and widget popup color schemes via an existing ...
2
votes
2answers
37 views

Estimating vegetation composition from digital images

I am running a Master's project researching Greater prairie-chicken nest and brood survival. Some of my intended covariates include local vegetation measures using digital imagery. I would like to use ...
0
votes
0answers
6 views

Move Zoom In & Out Button in ArcGIS JavaScript Web AppBuilder (Developer Edition Download)

After creating a web app in ArcGIS Online, I downloaded the app using the Web AppBuilder for ArcGIS (Developer Edition). Several folders, .json, .html, .js, and .css files are contained within the ...
0
votes
1answer
21 views

Kriging Interpolation

I am using the kriging interpolation tool. I included two dummy values within my dataset:- an upper limit and a lower limit. I ran the tool in arc map 10.1 software. However, I want to change the ...
0
votes
0answers
21 views

Calculating distance from PointGeometry object to polyline in arcpy

I created a PointGeometry object on ARCPY and I'm trying to measure the distance from that point to the closest point on a polyline table.. The PointGeometry object has an easy function for that ...
2
votes
1answer
36 views

Copy protection via license file for ModelBuilder models?

I've build a large model in the ArcGIS ModelBuilder and I want to share this toolbox with some other people BUT I don´t want to lose control over it. The first step was to set a password to my script, ...
0
votes
1answer
15 views

Rename layers with script

Just discovered Qgis and really impressed! I've not formal GIS training so rely on Google to figure stuff out. I'm using the SHP files made available by the Canadian Government as part of their ...
1
vote
0answers
24 views

PostGIS: Ordering by the sum of two distances

I have an SQL statement that selects possible bus routes between two points, ordered by the walking distance required from the start point to the departure bus stop (distance1) and the arrival bus ...
0
votes
0answers
14 views

why i am getting the error of memory while kriging [on hold]

I need some help regarding the solution of error in "R-code". on running the command krige.conv, the error message of cannot allocate vector of size 346 mb. turns up. I have tried the command ...
3
votes
0answers
20 views

Getting werid lines in print composer QGis

I am working with QGis 2.8 and want to use the print composer to create a jpg image. I used this PlugIn (https://github.com/jdugge/ClipToHemisphere) to create the globe. The graticules I created the ...
1
vote
0answers
12 views

developing a Talking Map

I need to develop a prototype of a web application that speaks : When you click on a city (point) it says the city name (Audio files are ready) I want to use ArcGIS Javascript API. do you have any ...
0
votes
0answers
4 views

problem with to addlister event google maps in same html file

I try to make two actionlistener one when the mouse over a marker show a infowindows and the other is for get when click on a market the lat and long and make an AJAX request the two lister code is ...
1
vote
0answers
26 views

Reproject before a Spatial Join

I have one polygon file containing all German municipalities as well as a point file. For each municipality, I would like to compute the average of a certain attribute of all points within the ...
1
vote
1answer
19 views

legend colour with specific value

i have model plotted in R base<- raster("example.tif") plot(base) image i'd like to change value (0,5,10,15,20,25) breakpoints<-c("0,5,10,15,20,25") plot(base,break=breakpoints) Error in ...
3
votes
0answers
36 views

Jenks Natural Breaks in Python: How to find the optimum number of breaks? [migrated]

I found this Python implementation of the Jenks Natural Breaks algorithm and I could make it run on my Windows 7 machine. It is pretty fast and it finds the breaks in few time, considering the size of ...
0
votes
0answers
13 views

Georeferencer does not open when clicked

Since a week my raster georeferencer is not opening when I click it. I have made sure it is checked in the plugins collection and have tried re-installing the newest version of QGIS, yet also in this ...
0
votes
2answers
21 views

Update Multiple Columns within One Update Cursor

Are you able to update several fields within an attribute table at the same item within one Update Cursor command. Code Example: with arcpy.da.UpdateCursor (fc, fields) as cursor: for row in ...
0
votes
0answers
13 views

Difficulty creating a point layer using the line intersections function in QGIS

I am attempting to create a point layer from two line layers where the lines cross. I am using QGIS's built-in Line Intersection tool but the output point file created remains empty. I have checked ...
2
votes
1answer
28 views

Merging ShapeFiles with QGIS for UK counties

I want to draw a map for all the counties of UK including North Ireland. Since I can not find a source of counties including both North Ireland and Britain. I try to merge two shapefiles with QGISfrom ...
0
votes
1answer
17 views

How to upload to an Attribute table

I have digitized a polygon using Arcmap 10.1. I want to upload fields from an excel table into the attribute table of the polygon layer. How do I do this ?
1
vote
2answers
19 views

Independently zoom data view without zooming layout view

This is probably a really noob question. How do I zoom in on the data view without it modifying my beautifully positioned layout view? I just want to be able to work with my data zoomed in, but ...
0
votes
0answers
28 views

Make PostGIS points from Ajax data in a php file

I have an AJAX a string which has lat-long parameters in a request. I try to make point in an SQL query but I get this error 37.15452626 ERROR; parse error- invalid geometry HINT: ...
0
votes
0answers
25 views

Spatial Interpolation/Resampling of Point Surface Data - Axes @ Different Resolutions

I have a simple set of data points in x,y,z format. This was data collected from a ground penetrating radar over a physical distance of: 45m x 25m With a resulting grid of: 90 x 100 (9000 points) ...
0
votes
1answer
9 views

Problem with CSS Extension in Geoserver 2.7.0 [on hold]

I am trying to load the CSS Extension in GS 2.7.0 by unzipping the contents of the archive into the WEB-INF/lib directory in GeoServer. When restarting GS i get a error : "Error creating bean with ...
0
votes
1answer
28 views

Why are these two shape files different?

Can someone please explain why these two shapefiles are different: Neighborhoods in Cambridge, MA ; and Water bodies in Cambridge, MA. In particular, I am having trouble working with the water ...
0
votes
0answers
26 views

Finding changes in values over time

I'm working on a study on gentrification using ArcGIS, and I want to see which areas in my city have seen major increases or decreases in property value over the last few years (and map that to ...
0
votes
1answer
13 views

Is there a way to limit google street view to extent on openlayers 2?

I want to limit the google street view area in my map to to 500m radius from where the street view panoram start (where the user clicked the mouse on the map) Is it possible ?
0
votes
1answer
33 views

How can I import pdf maps to ArcGIS?

I have few hazard maps (with color coding) of a particular state in a pdf report. I am a newbie in GIS and need to use these different maps from the pdf for combined interpretation. Can the colors ...
0
votes
0answers
2 views

Global Mapper-When export, see an empty file

I am using Global mapper software. I have my shapes in 3D in an .xyz file. I converted into shape file and open in Global Mapper. I can clearly see my shapes in 3D when i click on the 3D view of ...
0
votes
0answers
11 views

How to make an inundation map?

My task is to calculate the area available for specific plant species in a natural reserve that has been reconnected to the tidal influence. First step is to create an inundation map for a natural ...
0
votes
0answers
11 views

Why does my Android always show same lat/long for geotagged photos? Can I override this?

I am looking to collect point data with my Samsung Galaxy S3 using Android 4.1.2 However, every photo returns the exact same lat/long position Is it possible to override this and if so, how?
0
votes
0answers
20 views

EVI and NDVI range value

I've used a Landsat 8 image for vegetation analysis in an urban area. I've got a large maximum number of EVI value as shown in this image: Is this normal in calculating EVI and NDVI? Because I know ...
0
votes
0answers
17 views

ArcGIS implementation of an R-script for estimating spatial autocorrelation

How do I implement the following in ArcGIS? rho.from.data <- function(ras){ require(spdep) require(maptools) #-- Generate Spatial Pixels data frame from raster file --# r2r <- as(ras, ...
0
votes
0answers
18 views

layers not overlapping

I have two layers in the same projected coordinate system with extents not overlapping. When I check it under Layer properties - Source - Extent then this is not the same (for one of the layers top, ...
1
vote
1answer
41 views

Where is the python library of QGIS 2.8

where is the Python library for QGIS 2.8 on a mac (10.10)? I cannot find it... sys.path in the QGIS python console gave me some path, but where the interesting part is happening it replaces the ...
1
vote
1answer
15 views

Iterating through a point layer to create & sum distance rasters

I'm writing an Arcpy program to process data in a layer of several hundred points ('ptsLyr', from file 'ptsFile'), each of which has its own ID ('RecordID') and an associated value, 'radius', that I ...
-2
votes
0answers
20 views

Union of Unions?

I have 6 sets of data. Each set contains between 2 and 5 different line shapefiles which I have applied buffers to. Is it possible to union each of the 6 datasets, then union the resulting layers ...
0
votes
1answer
41 views

Where to advertise for freelancers? [duplicate]

If I wanted to advertise for a freelancer to do a GIS job, where would be a good place? I've advertised on oDesk (which we use frequently), but it doesn't even have a GIS category. Am I allowed to do ...
1
vote
1answer
14 views

How to calculate the shortest path to pass on 7.000 UTM points?

Anyone can give me an advice how to calculate the shortest path with a lot of UTM points? In total I have 7000 points, but it can be grouping 100 or 500. I have knowledges about Java and Python for ...
1
vote
0answers
13 views

Representing superposed polylines

I have several shapefiles representing bus lines with different colors for each segment, however, because the lines are exactly superposed, only the shapefile on top can be seen. Is there a way to ...
1
vote
0answers
13 views

Risk Maps - Spatial Analysis

I have created a basic mining subsidence likelihood map which contains the variables of depth and distance from lineament using the weighted overlay tool. From these results I would like to create a ...
0
votes
1answer
26 views

Proof low deviations in DEM compared to point dataset

I am not sure how to achieve the following consistently: I have a regular distributed point dataset (surface elevations). From this I derived several DEM using QGIS IDW Interpolation method. Now I ...

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