2
votes
1answer
17 views

Converting PostGIS point to text causing loss of data?

I have a road network and want to test connectivity between the features. I am having trouble with two specific features, the rest of the dataset is functioning just fine. When I get those 2 links' ...
0
votes
1answer
17 views

Passing a number between feature classes in ModelBuilder

I am looking at two non-overlapping polygon feature classes (let's call them Counties and Somewhereland; the latter feature class has only one record). I need to sum a certain field (let's call it ...
0
votes
0answers
38 views

Double Iteration Intersect in Model Builder

I need to intersect two highly-overlapping shapefiles, the first with 60 polygons (ponds), the second with 3000 (lilly pads). A straight-up intersection does not work (60 x 3000 -- it runs for hours ...
1
vote
0answers
13 views

Checking for the presence of a particular field in ModelBuilder [on hold]

The model that I'm now building in ModelBuilder will take as an input a certain feature class that may, or may not, have a certain field. I would like the model to check for the presence of that field ...
0
votes
1answer
23 views

Extending line segment to polygon edge using ArcGIS for Desktop?

I am trying to extend line segments to the related parcel. There is not an address field in the line segment but there is a year field. The year field is what needs to be added to the parcel to ...
1
vote
0answers
16 views

how to show all features visible on map?

i have restored on mssql a backup file and added it on qgis but it shows only some features NOT all features. i want all features to be shown on map.
0
votes
0answers
12 views

Finding download for open source high resolution digital elevation model? [on hold]

I am trying to create a figure for a paper with a ~9000 km^2 watershed and want as high of resolution as I can get my hands on. How do I find the highest resolution DEM download for a particular area? ...
1
vote
1answer
25 views

Splitting shapefile into features and keeping attributes

I want to split a shapefile so each feature becomes its own shapefile. The below works: with arcpy.da.SearchCursor(catch10, ["FID", "SHAPE@"]) as cursor: for row in cursor: out_name = ...
2
votes
0answers
13 views

GRASS 7 raster map calculator

I am new to GRASS and am trying to use it because I can't afford the Spatial Analyst extension in ArcGIS. I am trying to remove all of the values in a NDVI raster less than some value to exclude ...
0
votes
0answers
11 views

Drawing a line and finding a bearing

I need to draw a line from a point within a polygon to the edge of said polygon. I do not need to know the length of the line, only the bearing (in degrees) for the line. Thanks for the help!
0
votes
0answers
18 views

OGR error creating geometry for feature when deleting nodes

I have a line Shapefile that I need to remove many nodes from. Some I can delete fine, others delete but when I hit save I receive the following error: OGR error creating geometry for feature Using ...
0
votes
0answers
11 views

Overlaying data from a raster generated using Interpolation tool with Shapefile or a raster

For my project, I intend to identify if parameter A has been exceeded in forests. I have a shapefile for forests and converted that to a raster (if needed). I have point data for Parameter. I used the ...
0
votes
0answers
7 views

Importance of CRS in Getis-Ord Gi* hotspot analysis

I have a question about the importance of the chosen CRS in a Getis-Ord Gi* hotspot analysis - I am running a hotspot analysis (using Zone of Indifference spatial relationship) on a quite restricted ...
0
votes
0answers
8 views

SAGA GIS - trend removal, local relief model [on hold]

How can I run trend removal in order to create a local relief model of an input DEM in SAGA?
0
votes
0answers
15 views

Display gdal2tiles output openlayers 3.15.1

I have georeferenced an image raster with gdal and have create a new geotiff with EPSG:3857. Now I want to display it on my web site and I have two problems, probably because I don't understand enough ...
0
votes
0answers
14 views

Using Aster in ArcMap?

Can you open and use Aster level 1T data in ArcMap? If so, how do you go about doing this? I am wanting to upload my classification shape files onto the larger map, i am not sure if this is possible. ...
0
votes
1answer
15 views

Consolidating many-to-one overlapping polygon feature values into another polygon attribute using ArcGIS for Desktop?

I have a situation similar to the one here: Spatial join - many to one however the desired end product is a dissolved/aggregated feature that collects up all the values it was joined to. For example ...
2
votes
1answer
21 views

Getting long-lat coordinates from NARR LCC-gridded data using raster and rgdal in r

For context: I am a graduate student studying migration ecology of sea ducks on the Atlantic coast of NA and this is my first post on any of these forums. In my analysis, I require substantial ...
1
vote
0answers
18 views

Finding correct service for arcpy.createArcSDEconnectionFile_management in ArcPy?

I'm working on a toolbar for modifying an SDE database in acrmaps. My code works in a file geodatabase so I'm trying to use this function to make it work in an ArcSDE. I've gotten every other variable ...
2
votes
1answer
7 views

Is there a standard way to show navigability of waterways?

Is there a standard way to indicate whether a river is navigable? Even better, are there standard ways of showing various grades of navigability (accessible to small craft only, accessible to deep ...
1
vote
1answer
15 views

PostGIS raster to UTFGrid

I am trying to create a UTFgrid JSON with a Raster in PostGIS. The goal is to provide weather data for web maps. I found some libraries: https://github.com/Ecotrust/create-utfgrids ...
1
vote
0answers
19 views

Joining polygons to points when the points fall in the intersection of polygons. QGIS

I am using QGIS. I am hoping to join a set of geocoded points to polygons in such a way that the new snapefile will be points that have a new field which lists the attributes of the polygon it lies in ...
1
vote
2answers
25 views

Backup GIS data on postgis database from pgadmin3

I am using a postgis database with qgis and managing it with pgadmin3 I have already investigated the backup/restore options within pgadmin 3 and done one test run on one database I am wondering if ...
0
votes
0answers
12 views

Using ArcPy to compare two feature classes and export deltas

I would like to use a Python script to iterate through feature classes 1 and 2 and export the differences to a new table. So if feature class 1 contains 100 features and feature class two contains ...
1
vote
1answer
31 views

Arcpy Freezing on Field Calculation

I am trying to populate a grid with the number of features in each grid cell. I've gotten this script to work with a subset of the data, but when I try to run it on the full (52,000+) cell feature ...
1
vote
0answers
7 views

GeoFence: How to secure its REST API?

GeoFence is securing GeoServer quite nicely, but I can't find how to secure the GeoFence REST API. I've been able to access the REST API without any authentication.
1
vote
0answers
11 views

How to avoid QGIS line width scaling when exporting geometry to KML?

I have shapefiles loaded as linear geometries in QGIS. I use the layer properties dialog to apply some styling to them (color + linewidth). The goal is to output each layer as KML file. My problem ...
0
votes
0answers
13 views

Spatial extent not showing in Geonetwork metadata view

I have a problem displaying spatial extent in Geonetwork when I open some metadata record (as you can see from the image example). I get the right extent I previously defined in metadata editor, but ...
0
votes
0answers
6 views

Need to add my own parameter in WMS GeoServer

I have a project which requires to tracking request the Web Map Services through URL WMS. My customer want to make a services Portal to provide his partners the WMS, WFS as well, but he need to know ...
1
vote
0answers
36 views

Change coordinate system to add buffer in meters

I have am trying to add functionality to allow users to find points that are within a buffer distance inside or outside the parameter of a polygon. The map is in IProjectedCoordinateSystem so to my ...
1
vote
0answers
19 views

Per-pixel Descriptive Statistics through multiple Raster layers

I'm looking for computing different descriptive statistics through a set of raster layers. I need to make it with a python script capable of running into a standalone tool within the QGIS. To do so ...
0
votes
0answers
14 views

mean values from layers [duplicate]

I have downloaded from Search ArcGIS Online (from Add Data button) 3 layers. The first one is the topographic map (http://services.arcgisonline.com/ArcGIS/services/World_Topo_Map/MapServer?wsdl ), ...
2
votes
1answer
29 views

Why do labels in exports using HERE tiles appear tiny?

I am trying to export images from the QGIS print composer, the exported image has a basemap that is loaded from an XML file following this questions method. The export doesn't look at all like the ...
0
votes
0answers
3 views

How does distanceTo use accuracy in android.location.Location

I would like to know how exactly accuracy will be used in getting to know the distance with the build in function distanceTo(Location location). I have read everything in ...
1
vote
1answer
14 views

How to “clean up” undesired values in a slope raster

I have a reclassified slope raster with 3 values in band 1. My problem is that I want to polygonize this layer, but the surface is so irregular with a lot of plots in terraces and because of this it ...
1
vote
1answer
25 views

Why the street label is not showing in a feature in QGIS 2.14.2?

Why this street label is not visible even with zoom? It has 'name' in it... Here_qgis2.14.2_file
1
vote
0answers
23 views

Where to use the shp2pgsql commands?

I need to upload some very large tables (over 10Gb) into Postgis so I actually found this link What is the best hack for importing large datasets into PostGIS? The DB manager is far too slow and only ...
2
votes
1answer
15 views

Read multiple layers of KML file using R

I have a KML that 3970 layers. I am trying to read it into R using the following script: library(rgdal) lyr <- ogrListLayers("file.KML") mykml <- readOGR("file.KML","Layer1") This works but ...
0
votes
0answers
22 views

Shapefile analysis with ArcGIS10.1 [on hold]

I am using ArcGIS 10.1 for Desktop and I am struggling to make a shapefile with a map. I made the shapefile but I could not include a map with longitude and latitude. I have data about tuberculosis ...
1
vote
0answers
20 views

Generate points layer at line intersection

I have a line layer that is actually buffer polygons converted to a line layer. I would like to generate points at all places where 3 or more lines intersect. I would settle for places where 2 or more ...
0
votes
0answers
26 views

Transitioning MapServer from 32bit to 64bit: CGI Error

I am moving a mapserver system from 32bit to 64bit Windows (too many frustrations with multiple python installations). There is no straightforward MS4W installation for 64 bit. I am using Apache2.4 ...
1
vote
1answer
32 views

ArcGIS ArcPy update attachments table rows

Some background: We were using Collector on Android to collect data for a layer, and we found out that the pictures that were attached contained no EXIF tags at all, including the orientation tag - ...
1
vote
1answer
8 views

POST CQL filter (with large geometry) in HTTP body

The size of an URL is limited. Therefore I'm not able to request a WFS with a complex geometry. I read (Geoserver POST filter to WMS layer) that is possible to do in a WMS, but I didn't get it to ...
0
votes
1answer
25 views

How to edit a table in order to count the number of points in the same location?

Using QGIS, I have a point shapefile that has multiple points with same coordinates across different locations. I need a count of those points. For example there are 15 features that have the exact ...
1
vote
0answers
28 views

QGIS 2.14.3 can't attach oracle spatial table

when I try to attach spatial table in QGIS, the application close without errors. The tables which have problem have a UUID column: mslink NUMBER(10,0) NOT NULL, uuid RAW(16) ...
0
votes
0answers
9 views

Analytical tool to predict up to where fish can migrate [on hold]

I would like to be able to predict up to where a fish can migrate from a given river or lac. I have to take into consideration water connectivity as well as barriers (naturals or artificial) that ...
0
votes
0answers
15 views

Using ARC to manipulate specific cells in a columns to create “lines” from ingested coordinates

I have a shapefile with LAT/LONG coordinates but there is no Start/Stop Columns, just the LAT/LONG. In order to use the XY to Line or Points to line tool I need to have a LAT_Start and LONG_Start; ...
0
votes
1answer
25 views

How to update a base map to get a better image

I want to use a base map under some layers I'm working on. It's in an island in Azores, Portugal. I need one World Imagery so It can be seen all the vegetation, buildins and streets. My problem is ...
0
votes
0answers
14 views

Creating Drive Time Polygons Across State Boundaries Using OSM?

I am using pgRouting on OpenStreetMaps to create drive time polygons. The challenge is that at state boundaries, these polygons effectively stop, since the roads in OSM are segmented at the state ...
1
vote
0answers
14 views

Neighborhood analyses with GRASS/QGIS using ASTER GDEM

I have a problem related with this question (Old question without answer: R.Neighbors with large neighborhoods?). Basically, I want to estimate roughness of a given area, for which I was using QGIS, ...

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