0
votes
0answers
2 views

x y coordinates are displaced in geotools crs when saving to store

Map<String,Object> params = ...; // postgis params DataStore dataStore = DataStoreFinder.getDataStore(params); SimpleFeatureCollection collection=...;// collection to save SimpleFeatureType ...
0
votes
0answers
4 views

How to calculate the distance between a line and a point (using lat/lon coordinates)

In my Android app, I need to calculate the distance from a point (the device's location, which is a lat/lon coordinate) to a line (defined by two lat/lon coordinates), and get the result in meters. ...
3
votes
1answer
15 views

what is the difference between Coordinate System and Coordinate Reference System

What is the concept of Coordinate Refenrece System. You know GeoTools has a FeatureType class having getCoordinateReferenceSystem() function and also a CoordinateReferenceSystem class having ...
1
vote
2answers
24 views

How do I make equidistant circles covering the whole globe in QGIS?

What's the simplest way to make equidistant circles in PostGIS/QGIS? (my software versions are Postgres 9.3, PostGIS is 2.1, QGIS 2.10) I tried this in PostGIS, but the circles that come near or ...
-2
votes
0answers
13 views

Looking for data with shape file [on hold]

I am looking for ge-orefrenced data with shape file. Does anybody know any repository or a specific dataset I can download?
0
votes
0answers
11 views

Creating polygon grid using fixed extent

I have a Shapefile of a town. I would like to divide the whole area into grids such that each grid has a scale of 1:2000. I have set my map to fixed scale (1:2000) in Layout View.
0
votes
0answers
3 views

Apply mask on ERDAS LPS

I am currently working on my final year dissertation and most of it is done on LPS. I am using Cartosat-1 and ALOS PRISM imagery to create DTMs for an area that is located on a peninsula. The problem ...
1
vote
0answers
5 views

Magellan GPS stops recording data in suspend mode

Currently having a problem with my Magellan Explorist 510 GPS unit. After I start recording the track on the unit, after some time, it just stops recording data in suspend mode (which should turn ...
0
votes
1answer
7 views

How to get coordinates in a area

Is there a database i can download to to get all latitudes and longitude of any town in the world? for example (N17.3526, W54.5635),(N17.35526, W54.5635),(N17.3526, W54.5635) and (N17.83526, ...
0
votes
1answer
12 views

Copying feature classes from Personal Geodatabase to File Geodatabase using ArcPy?

I have huge amount of personal geodatabases that contain dataset and feature classes (one dataset with four feature classes and one feature classes outside of the dataset in each mdb). I want to ...
0
votes
1answer
15 views

GeoTools modify a FeatureType to change its name

I have a featureCollection and I want to save it into PostGIS dataStore. So I'm going to create a database table by geotools. I want to name my table "ali". But I can't rename the schema! DataStore ...
0
votes
1answer
43 views

Sorting points based on Northing and Easting

I have around 1320 point/centroid features in a shapefile for my research plots. Each point/centroid has X and Y coordinate associated with them which were calculated using Field Calculator > Geometry ...
0
votes
0answers
5 views

Creating Service Areas with a Certain Constraint (Network Analyst)

I'm looking to create service areas around a number of facilities each with a set population max capacity. I have centroids from census data that are snapped to the network representing 'demand.' Is ...
0
votes
0answers
11 views

Re-projecting raster from laea to geographic coordinates (WGS84) using R?

I am working with a number of very large 250m resolution raster files from the African Soil Information Service (AFSIS, http://www.isric.org/data/africa-soil-profiles-database-version-01-2) and would ...
0
votes
0answers
17 views

Displaying heatmap with large number of dense points of interest in QGIS?

I am currently trying to make heatmaps of bird observations in an area. I have had a lot of success making the actual heatmaps for most birds, except the ones that are extremely abundant. I use the ...
-1
votes
0answers
33 views

Arcpy Copy Feature Classes with Overwrite to specific feature datasets

Objective - I have a target GDB "schema" with set feature dataset names and feature classes (no features) within them. I want to copy submittal geodatabase feature classes into that target. I first ...
0
votes
0answers
19 views

Problem visualizing OSM's ways twice in leaflet

I have retrieving all types of data from a small B-box using the Overpass Api and i have populated Postgres(postGis) using "osm2pgsql" with the default style. I can extract the ways into geoJson ...
2
votes
1answer
10 views

OTF reprojection and reprojecting layer not working in QGIS

more troubles in QGIS. I georeferenced this raster in Corrego Alegre UTM23S and loaded up, so project CRS automatically changed to that. So far so good. I need it to be however in WGS84 UTM 23S. None ...
1
vote
0answers
6 views

GeoWebCache tiling failing due to topology exception

I am running GeoServer 2.8 WAR on an Ubuntu machine in Tomcat 7. I have GeoWebCache integrated directly and it does cache and serve some tiles. However, in some areas I get errors when I attempt to ...
1
vote
0answers
20 views

ArcGIS Python Add-in using non-GUI window

Does anyone know how to create ArcGIS Python Add-in, that will allow after clicking on a feature, open a new window with a few pictures connected with the feature and then let the user change these ...
0
votes
0answers
5 views

Adding in additional OpenLayers layer trees from layer parameters

I am developing an OpenLayers web application were I would like to incorporate more than one Layer Tree. I have this JSFiddle set up that has a map with multiple layers and one Layer Tree. I would ...
0
votes
1answer
18 views

PostGIS - Raster - update all values - what is prefered

I have added the Raster support to my PostGIS database program. Now, I need to update all values in the raster (one band only) several times a day. I have found and tested these two options Use ...
0
votes
1answer
19 views

Controlling map details shown using Leaflet and MapBox

I am building a map based chart using Leaflet (with MapBox). I would like to know if there is a way to control the level of details displayed on the map when zooming in. For example I do not want to ...
0
votes
0answers
15 views

I am looking for data for GWR

I'm writing a dissertation on the effects of different parameters settings in GWR over different density patterns. I am looking for data that have geographical referee (i.e. latitude/longitude) and ...
0
votes
0answers
13 views

Null save into Shapefile using geotools [on hold]

When I convert csv to shp in geotools, I have an error NULL store for first attribute in my shape file. e.g. - want result: POINT(3625.55 3659.25), 2.4, 3.9 Error result: Null, 2.4, 3.9 What ...
0
votes
1answer
15 views

Pre-load tiles in OpenLayers 3

I need to preload images (.png) / tiles in my own source: new ol.source.XYZ ,which can it run fast to move and zoom in mobile devices. I used ...libs/ol3/3.7.0/ol-debug.js and as urls: urlArray ...
0
votes
0answers
13 views

Arcobjects vb.net stringbuilder

I'm newbie and have question about string builder to show the arcgis layers. (System: ArcGis 10.2, VisualStudio2012) I don't succeed to show the loaded layers in a line of the message box. code: ...
0
votes
1answer
5 views

cartodb.js without jqyery, backbone, mustache code merged?

I found that cartodb.js has also the code of library like jquery, backbone, mustache etc. As on my project I am already adding jquery and I dont need backbone/mustache etc, so is there any cartodb.js ...
0
votes
0answers
25 views

Qgis network analysis why find vertex return always -1

I'm trying to compute the shortest path between points using the QGIS networkanalysis library. But the graph.findVertex always return -1. Basically what I'm trying to do is : 1/ Given a set of ...
-3
votes
0answers
12 views

How do I use the GIS to find parcel tax numbers in Lexington County in South Carolina? [on hold]

I use to be able to use the older GIS system to find land parcels and houses when I wanted to know the number to learn more about the property or home. Now I am totally lost. I go online to County ...
0
votes
0answers
6 views

Parcel Tax Map Numbers in Lexington County South Carolina [duplicate]

How do I look up parcel tax numbers for properties in Lexington County, South Carolina?
0
votes
0answers
5 views

How to increase height of image header in Infowindow?

The CartoDB Infowindow default image header width is max 400, with height always set to a default, which looks to be about 250 so the image is really wide. Is there a way to set the image to be more ...
0
votes
1answer
19 views

Multiple related tables?

Is there a way to relate 2 tables based on 2 distinct fields and be able to open the related table for each distinct field? Say I have a short list of 500 addresses of interest. I would like to ...
0
votes
0answers
6 views

How to clear Print Preview using C# window Form and ArcObject? [on hold]

when I setup the second page it override to page 1, how to clear page 1?
0
votes
0answers
12 views

Problems in saving the output of a Conditional Statement [on hold]

I have a problem saving my output from the following script. I can see an un-displayable image at the intended location with the same name as the first intended output. Mostly my gis crashes down and ...
0
votes
0answers
9 views

Really slow extraction from raster even after using crop?

I have a large raster file (245295396) cells and stacks of rasters having 4 layers each which lie in the extent of this large raster. To start with I am trying to get value from one stack (3 channels) ...
0
votes
0answers
11 views

Stack advice: solr + OpenLayers +? [on hold]

I have a solr instance with a few million items that is being queried for geographic coordinates and some rich media (like tweets). These are sent to a GPU for rendering. The resulting data is ...
0
votes
1answer
10 views

Loop to check multiple polygons overlap in r

I have a set of polygons (available here: http://ulozto.cz/x39ELbFt/polygons-zip) created in QGis and processed in R. I would like to know if they are overlapping or not, and if yes, where is the ...
0
votes
0answers
8 views

Using photo for mapping lineations in ArcGIS for Desktop?

I am attempting to map the paths of burrow on an oriented photo in order to generate an xy xy chart to run a lineation analysis. How do I get a photo into ArcGIS, orient it, and trace lines that ...
0
votes
1answer
22 views

NOAA API data for past monthly mean Temperature and precipitation

I am trying to use the NOAA API to get data on monthly mean temperature and precipitation for the past 10 years. I wrote the following python code (the variable "token" in the code is the API token ...
1
vote
1answer
9 views

Conflicting results for spatial autocorrelation tests

I am working with an imbalanced (5%/95%) presence/absence dataset. I've created 25x25 m. raster cells that are categorized '1' or '0'. My Geary's C result (~0.993) and Moran's I result (~0.0045) are ...
1
vote
1answer
32 views

Can't get my QGIS external map to display on Ubuntu trusty: QObject::connect: Cannot connect (null) error

I've been following along the examples from the book "Building Mapping Applications with QGIS and for the life of me I can't figure out why my shape files aren't loading and displaying in the app ...
0
votes
1answer
13 views

OSGeo4W GDAL Polygonize Batch Convert?

I'm trying to use GDAL polygonize to run a batch convert but I cannot for the life of my figure out a way to get it to read a text file as input that contains all of the commands. Do any of you know ...
0
votes
1answer
16 views

What is the difference between the “feature to raster” and “polygon to raster” tools when converting a polygon to a raster?

I am currently trying to get a group on connected polygons that are within the same feature to a raster so I can reclassify it for cost analysis. I noticed that ArcGIS for Desktop has a "feature to ...
1
vote
1answer
15 views

Point to raster conversion works as a tool in arcmap but fails when attempted with identical parameters in a script

I'm working on a script that will automate a stream delineation protocol given a DEM and a culvert layer. I was having difficulty troubleshooting problems with the point to raster conversion tool so I ...
1
vote
1answer
38 views

My QGIS plugin shows GUI but not Works. How to get Error log?

I am new to PyQgis. I made a simple calculator with PyQt4, now I am trying to run it under QGIS. I connected calculator as plugin, and tested it, its GUI works without error but it does not calculates ...
0
votes
1answer
16 views

LAStools (3D Analyst) scale factor application

I'm trying to use the las2las(transform) module from the LASTools toolset to apply a scale factor to an LAS dataset. The problem is that the client wants us to apply the scale factor from a known XY ...
0
votes
0answers
9 views

ImportError: No module named mapnik on CentOS 7

The problem: I've installed mapnik 3.0.1 successfully by running the typical source code install: ./configure make && make install ldconfig -v However.... When I import mapnik into ...
0
votes
0answers
11 views

Launch processing tool user interface using python command

I am trying to launch the user interface of a processing algorithm using Python script but I cannot find a simple way for it (aside double clicking on it in the process toolbox of course). The plugin ...
0
votes
0answers
12 views

python script for splitting a polygon feature into equal parts

Is there a python script for splitting a polygon feature into equal parts in arcgis 10.1 . I know arcgis 10.3 has a segmentalongline function but I m looking for Arcgis 10.1 functionality. THis is ...

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