0
votes
0answers
2 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 ...
0
votes
0answers
5 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 ...
1
vote
0answers
9 views

Where to advertise for freelancers

If I wanted to advertise for a freelancer to do a job of setting up OS Open Data on a server, where would be a good place? Am I allowed to do it here?
0
votes
0answers
5 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 ...
0
votes
0answers
3 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 ...
0
votes
0answers
6 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
0answers
6 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 ...
0
votes
0answers
3 views

For GPS point data using android, default camera app or other software?

I'm curious to know about your experience using the default android camera app for geotagging photos vs other apps. I am going to trial a few different of these apps over the next month or so on ...
0
votes
0answers
5 views

automatically generate useful scales for data driven pages in ArcGIS desktop and store it in attribute table of shape file

Hello Mr Cindy thank you very much for your discussion about How to automatically generate useful scales for data driven pages in ArcGIS desktop , this is what I was looking for. I followed your ...
1
vote
0answers
11 views

3d model to point cloud

Excepting FME, is there a way to convert 3d model to point cloud?
0
votes
0answers
8 views

OpenLayers Plugin 1.3.6 / Ubuntu 14 Problem?

I installed QGIS 2.8.1 on Ubuntu 14.04 LTS 64bit (from repository http://qgis.org/debian trusty) I installed OpenLayers Plugin 1.3.6 It doesn't show in main menu (Internet) like on Mac Do I miss ...
0
votes
0answers
7 views

Taking photos representing concepts of scale, territory, flow and network in relation to globalization? [on hold]

For my assignment, I have to take four photos representing each of these concepts in relation to the processes of globalization. I've read my textbook, but I don't know what to take photos of. Any ...
0
votes
0answers
10 views

GRIB data interpolation

I've been wrangling around in GFS grid based data (GRIB - mostly 0.5 degree resolution). I'm interested in plotting these by converting to geojson with ogr2ogr (which is quite easy). However, is there ...
1
vote
1answer
19 views

dissolve polygons of GeoJSON with gdal/ogr

I have a GeoJSON with only polygons in it. I have to dissolve (merge) the polygons with the same "DN"-value. I found out that you can do it with shapefiles like this: ogr2ogr outputfile.shp ...
0
votes
0answers
5 views

Invalid z_field for spline in ArcPy, though spline works using toolbox and same inputs?

I tried using the field name for z_field input per the link below, however, neither calling the field name or the field itself works. If I call "field" as defined in the for loop, I get invalid ...
0
votes
0answers
14 views

Using pymssql to create a table using python ArcMap 10.3

I am using ArcMap 10.3 have a my data in a geodatabase (MS SQL Server Express) and I am trying to write a python script that does a bunch of spatial and non-spatial data manipulation. I need to dump ...
0
votes
0answers
10 views

Graduated Style on edges not appearing — QGIS

I have added a layer from a PostGIS database. The layer is representative of road segments in the greater Chicago area. I have added a second layer that does not have any geometry information but ...
0
votes
0answers
14 views

develop rooftop solar radiation potential from 3d buildings model (3dm)

Need to create solar cadastre without having LIDAR data. Have 3d buildings model in .3dm (150 000+ roof surfaces, 500 000+ facade surfaces unmapped, dtm 15x15m) with a lot of multipatch geometry ...
0
votes
0answers
4 views

GeoExt action question adding action for two maps

I have a question with zoom box. Below is the geoext action code I am using action = new GeoExt.Action({ text: "Zoom In", control: new OpenLayers.Control.ZoomBox({alwaysZoom:true}), ...
1
vote
0answers
9 views

ArcGIS Split Raster tool results in black rasters

I have a rather large raster that I am trying to split into small tiles in PNG format to upload to Autodesk Infrastructure. I came across the Split Raster tool and thought it would do exactly what I ...
1
vote
1answer
31 views

In ArcPy, How to call specific columns of attribute table?

I'm trying to figure out how to spline specific columns of a shapefile attribute table, but my question is intermediate to this-- how do I select a range of columns, e.g. the 20th column to the ...
0
votes
0answers
12 views

Stopping a route using attributed length

I am working in a project where I need to run routes from several points on a route network and have them stop at a specific length. I have worked out their max distance want to use this attribute to ...
1
vote
0answers
8 views

How to calculate scale

I'm working on processing some geo-spatial raster data, JOG-A raster to be exact and know the imagery is supposed to be to a scale of 1:250000, however I would like to calculate this in code but am ...
0
votes
0answers
12 views

Openlayers Plugin

I just downloaded QGIS 2.8 and tried to download the Openlayers pLugin but it isn't installing and I don't know how to get the open source data in my map. How do I download Openlayers Plugin for Mac ...
1
vote
1answer
26 views

How do I enumerate the messages in arcpy.GetMessages()?

Messages are present in GetMessages() but it's a formatted string. I want to add some of my own newlines and alter the content on a per-message basis. How do I access the individual messages in ...
0
votes
0answers
6 views

Open Layers - maths engine to find “real” device orientation for driving?

I have a cordova "sat nav" project and there seems to be a masssive issue with regards to openlayers (or anything on cordova for that matter) : namely this. It seems relatively trivial to make a ...
0
votes
0answers
14 views

How to get the Shape.STLength() value from JSON

I'm trying to get the Shape.STLength() value from a feature returned from a query. something like var myLength = returnedJSON.features[0].attributes.Shape.STLength(); "Shape.STLength()" is ...
0
votes
0answers
22 views

Convert Zip+4 to Lat-Long

I have a need to convert about 1 million Zip+4 records to Latitude/Longitude for mapping but cannot find anything that is granular enough in output. Is there an easy way to convert this information?
0
votes
2answers
9 views

Combine Community Layer with County Layer in ArcMap?

I have a County shapefile that I am trying to combine with an updated community or jurisdiction shapefile. I have tried Unioin, Merge, and Spatial Join, but am not getting the desired results. The end ...
0
votes
0answers
12 views

QGIS- Grouping Multiple Layers in to separate groups

I'm trying to group a large amount of layers together. They are a mix of Polygons and Points, I would like to create individual groups by the layer's name. Anyone have any ideas? I was looking to ...
0
votes
0answers
6 views

Import KML file into GeoDjango (updated)?

I'm trying to import a KML file into an existing GeoDjango app (using a Postgres 9.3 database). This is my Django model: class PCT(models.Model): code = models.CharField(max_length=3, ...
0
votes
0answers
26 views

force QGIS-labels behind polygon areas

Is it possible to force labels behind a polygon dataset. In my case I want to put 50% transparent polygons onto areas, which are shown "inactive" on maps. Unfortunately, some feature labels are shown ...
2
votes
1answer
14 views

can i comparing landsat 7 and landsat 8 thermal band?

can i comparing landsat 7 (band 6) and landsat 8 (band 10&11) thermal band? because landsat 8 only have 100m spatial resolution, so the output looks more general or blurr than landsat 7 thermal ...
-1
votes
2answers
18 views

How to extract values from raster at points with many different rasters and points

I have a folder containing 100 DEM rasters. I have a point file containing thousands of points. I need to collect raster values at all of these points. Only some of the rasters intersect with the ...
1
vote
1answer
7 views

Querying related table and displaying results in CMV Attributes Table

I'm trying to use the new Attributes and Search widget for CMV with a relationship query without success - I keep getting a growler message saying 'Search error; Sorry an error occurred and your ...
0
votes
1answer
5 views

OpenLayers not displaying GeoJSON layer with features added after the fact

I have a vector layer with a GeoJSON source layer. OpenLayers isn't showing the layer when I try to add features using the addFeatures method: myGeoJSONObject = { /* some GeoJSON */ }; editLayer ...
2
votes
2answers
30 views

Plotting Netcdf data. How to get right projection?

Maybe it's very easy for someone to fix, but I'a a new one in R, so I really need help. I/m trying to plot data containing lat, lon and variable (nmf2). The grid isn't a regular one, so there are some ...
0
votes
1answer
11 views

Fast way to check if postgis bounding box contains any points/linestrings

I have a bounding box given and want to know if this bounding box contains (or better intersects) any points or linestrings. So the query should return true if the first point/linestring was found and ...
0
votes
0answers
26 views

Speed up row-wise point in polygon with Geopandas

I have a geopandas GeoDataframe which contains some attributes and a geometry column which is filled with shapely Point(lon, lat) objects. Moreover, there is a GeoSeries which is equally indexed as ...
1
vote
3answers
62 views

How do I normalize the values in a single Field (from a table) in ArcGIS?

First of all, this is my first post, and I would like to appreciate all the useful information I have found so far on this site. Second of all, I have encountered a problem, in Field Calculator. ...
1
vote
0answers
12 views

Print a PDF with label layer visible only for printout

I have a feature layer showing nursing facilities and I have added label layer that show Facility IDs. I need labels only for the map printout, I do not want the labels on the map, because I already ...
0
votes
0answers
20 views

dxf-Export is not readable in BricsCad

With the QGIS 2.8 dxf-Export it is not possible to open these files in BricsCad (a CAD-Programm which is very similar to AutoCad). the dxf-Export from GIS 2.8 and import in BricsCad looks like!(not ...
0
votes
1answer
19 views

Specifying alternate symbology for print vs screen

Is there a way to specify an alternate symbology for print output in ArcMap (as opposed to what is currently on-screen? I am thinking along the lines of the functionality offered by CSS. For ...
0
votes
0answers
13 views

Problem with geotiff images in geoserver

I'm trying to import a geotiff file in geoserver 2.6.2. Previously, the same image were successfully imported in geoserver 2.2.5. But in 2.6.2, I get the floowing message : ...
0
votes
0answers
15 views

Using the phase 1 habitat styles?

I am utilising the phase 1 habitat styles and wanted to show 'mixed scattered trees' which is essentially a layer with two different types of green dot. I cannot figure out how to do this and also ...
0
votes
0answers
12 views

How to add new SRS/Projection/WKT to the GDAL database

I'm using GeoServer, OpenLayers(3.0) and the GDAL utilities. GeoServer has one (or more) SRS/Projections that is/are NOT present in the GDAL database of SRS/Projections. I can get the well-known ...
2
votes
2answers
21 views

Assigning values of points outside a buffer to points within a buffer

I have 10m buffers around line features and a point shapefile which has some points intersecting the buffer. I would like to take each point that falls within the buffer and assign it the value of the ...
1
vote
1answer
25 views

extracting the outline of raster imagery using GDAL

Salams I want some help regarding developing a method using GDAL to extract and represent the footprint of any raster file (or group of raster data) in a vector format... any ideas please ??
0
votes
1answer
16 views

Graphical modeler in QGIS. I can't find a model [duplicate]

I'm a doing a tutorial for QGIS and at one point I have to use 'Join attributes by location' model but I do not find it in the Graphical modeler. Does it have to be there? I have to download it from ...
0
votes
0answers
18 views

ODK Collect GPS Accuracy

Good day. Is it possible to require a minimum accuracy of the GPS widget? I know about accuracy threshold but what I need is to prevent forward swiping/finalization of the form if GPS accuracy is low. ...

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