3
votes
2answers
11k views

Adding points to point vector layer using QGIS?

I have a point layer with multiple data points in QGIS, but I want to add some extra data points to it and adjust some info that we missed because the ground was wet and we needed to go around it. I ...
0
votes
0answers
3 views

Qgis how to remove automatically non present entry inside legend

Using Qgis after loading shp file i loaded a general qml files that are coded for a specific field for my shp. Inside qml are coded a larger number of value of the field that not all are present ...
1
vote
2answers
8 views

How to select first coordinates in multipoint or in collection used for point reducing?

I am using PostGis and I have geometry like this: MULTIPOINT(1673118.56314624 5778263.30559826,1672914.41092247 5778129.131443,1672384.7731665 5778105.44570288,1673513.70724225 5778525.74090022) ...
2
votes
2answers
145 views

Problem with borders of counties

I have a problem with the borders of counties. I have a shp file with counties and I want to combine them into one large district. Unfortunately, after I chose 'connect the selected objects' one ...
1
vote
0answers
3 views

QGIS - This extension is corrupted : No module named qgscollapsiblegroupbox

I'm building a QGIS plugin, and I am making the GUI using Qt Designer. Whenever I am using one of the "QGIS custom widgets" (in the present case, a QgsCollapsibleGroupBox) in my plugin window, it ...
1
vote
3answers
13 views

Splitting a string field that contains time information

I have a text field within a FGBD that contains a date/time and I need only the time as a string. 'yyyymmdd HH:mm:ss' And I need: 'HH:mm:ss' I've tried .rsplit but I'm not using it correctly. I ...
0
votes
1answer
192 views

What is the difference between Specific Catchment Area and Total Catchment Area in hydrology?

I am getting stuck on the concepts of Total Catchment Area (TCA) and Specific Catchment Area (SCA) as I try to learn more about TOPMODEL. What do these metrics mean in hydrology? The context I ...
0
votes
2answers
54 views

ST_DWithin matches wrong points

The following query crosses every city called "London" with every "place" (both of which are in London, UK) and calculates the distance. The points are of type geography. SELECT c."Name", ...
1
vote
0answers
14 views

How to handle large tables in QGIS using python?

I'm currently writing a plugin that calculates values based on a QgsVectorLayer's attributes. To display and print the values I'm using a QgsComposerTextTableV2. I have several problems with my ...
1
vote
1answer
10 views

Invalid Output Workspace error when executing Slope_3d as WPS

I wrote a small toolbox that calculates the slope in degrees of a given .tif file, stores the ouput to a local folder on my computer and generates 2 by 2 tiles. The toolbox works fine, the publishing ...
0
votes
1answer
473 views

GeoServer REST API bug - “The specified coverageName is not supported”

I've encountered a problem with GeoServer REST in both 2.6.2 and 2.5.4 (though not, interestingly, in 2.3.1). When adding a GeoTIFF with a path accessible to GeoServer, the server replies with: The ...
0
votes
4answers
37 views

Volume using VB Script of the field calculator

I am trying to compute the volume of the area given certain condition. i wrote the following VB code however, i am getting error that it has failed to do so. Can anyone look into it and suggest a way ...
1
vote
0answers
8 views

QGIS create layer from spreadsheet file (Spreadsheet Layer plugin)

With the QGIS plugin 'Speadsheet Layers' i try to create a layer with the following parameters: But I'm just getting a layer with no geometry. I've been playing arround with real instead of ...
1
vote
0answers
6 views

Save edits as Project in Arcmap

This link suggests that you can set up ArcMap so it saves edits (Currently Editor -> Save Edits) as the same time as a project. However, I'm using an older version of (ArcMap 10.2.2) and the option ...
0
votes
3answers
7k views

Merge attribute of points into a polygon : Arcmap 10

I have points layer which the attribute looks like this: FID Shape ID Lat Long 0 Point 2065 -5.51666 106.48333 1 Point 2319 21.93333 120.73366 I also have polygons layer : FID Shape ...
1
vote
2answers
37 views

Where is street level data stored in mbtiles files?

I have a .mbtiles file loaded into an SQLite browser, trying to find street level data (road names, A/M roads etc) and I cannot figure out where any of it is kept. I'm assuming it's stored in the ...
0
votes
0answers
4 views

Data Set of Places to visit around the world

I want to know the tourist spots around the world. Basically i want to know the name of the places and their latitude and longitude information. Are there any available data sets like these?
0
votes
0answers
2 views

flag problem in network trace in arcmap

i want to trace using a weight filter but we i have the case, that 2 edges are overlapping and they share the same 2 junctions. Now if you want to set a flag, you won't be asked if you want to select ...
0
votes
2answers
174 views

how do i update the sld of layer dynamically

I am using Geoserver 2.1.3 and Openlayers2.3. i have set the default sld for each layer in geoserver which it take by default on map startup, but when i update the sld using code map.layers[3]....
1
vote
4answers
1k views

Local OpenLayers3 - SVG icon

I have an OpenLayers3 map on my local filesystem, and I want a point layer to use SVG icons. This seems to fail silently: var style = new ol.style.Style({ image: new ol.style.Icon({ size: ...
0
votes
0answers
9 views

How can I load data into SQL Server spatial using SQL Server Integration Services?

How can I load data into SQL Server spatial using SQL Server Integration Services (SSIS)? I'm aware of other tools, like FME and ogr2ogr, but my only option is using SSIS
2
votes
1answer
45 views

select living-end-streets from a local osm-road-extract with QGIS

I am looking for a method or query to select living-end-streets from a local osm-road-extract. Living-end-streets are dead-end-streets for cars but cyclists and pedestrians can continue on their way. ...
1
vote
1answer
103 views

TypeError raster object is not iterable when trying to normalize DEM

In ArcGIS 10.1 I'm trying to normalize a section of a DEM (digital elevation model) from original values to values ranging from 0 to 100. First I clipped the raster DEM with an irregulary shaped ...
2
votes
0answers
15 views

Creating an Interrupted Map With OGR, Mapnik and PIL

I am trying to create a simple interrupted Sinusoidal map with Python using OGR, Mapnik and PIL. The general idea is: Make 6x 60 degree sinusoidal maps For each one, make a mask to make it gore ...
1
vote
1answer
11 views

How to extract shortest path from floydwarshall algorithm pgrouting

I've tried Floyd-Warshall algorithm using pgrouting with the following code; SELECT * FROM pgr_floydwarshall( 'SELECT gid AS id, source, target, meters AS cost FROM jalan') ...
1
vote
0answers
9 views

Onclick location, using location in function

I'm making tilemap with two layers: map from my files stored on HDD, second is OSM. I've made it with gdal2tiles.py How it looks: I want to add a onclick popup which will show link to the original ...
2
votes
3answers
38 views

QGIS add virtual field to csv layer

In QGIS 2.14.3 added a csv file as a layer. Attempt to add a virtual field like shown in the screenshot below (same result with "field_14" || ' ' || "field_10" || "field_11"): The field is created ...
0
votes
1answer
354 views

Check if a point cordinate is between linestring cordinates

I know that, linestring is a vector and if i want to check that, if point cordinates are between linestring begginning and ending cordinates then i need to use vector comparison (x2 > x && ...
1
vote
1answer
56 views

display local tiles with openlayers that are generated by maptiler from a (.tif) georeferenced image

im working on a mobile app and trying to use my locally stored tiles that i generate using maptiler software. after tiling my image.tif i got many folders of png images and two other files : ...
0
votes
0answers
20 views

How to capture the event whenever the items inside the listview is enabled or disabled and get the number of enabled checkboxes inside the listview [on hold]

I have a function "openBrowse" which will allow the user to select SQL files from a local path and display the file names as with dynamic checkboxes created based on the number of files selected ...
4
votes
4answers
6k views

How can I fix “ImportError: No module named qgis.core”?

First of all, I'm using Python 2.7.3, QGIS 1.8 (Lisboa) on Windows 7 pro 64 bits. Now let's go to the actual question: I have written some code (Python) that works well within the QGIS built in ...
1
vote
0answers
16 views

Comparing point pattern and raster data?

I have a simulated data set showing distribution of a certain habitat type as a point pattern. Then I have a empirical data set but there the format is raster. The two datasets are covering the ...
0
votes
1answer
673 views

Finding gaps between polygons using ArcGIS Desktop? [on hold]

I am trying to build procedure for finding gaps and convert the procedure steps in to code, but i am finding some difficulty, i wonder if someone can help me with it. the steps i planned in seek of ...
0
votes
0answers
6 views

Geoserver/Geowebcache producing corrupt tiles

I've used Geoserver 2.6.4 (with GeoWebCache 1.6.2) to generate a tile cache. However, some of the tiles are becoming corrupt (see below). I've looked around and found many references to improvements ...
1
vote
1answer
240 views

Geoportal Server 1.1.1 search widget for Flex 2.5

Does anyone one know where I can get the above mentioned search widget? I have been tasked with installing this to an existing geopoprtal server and Flex viewer does anyone know how to do this. i have ...
15
votes
5answers
8k views

Creating equidistant points in QGIS?

I am trying to create points (new layer) at specific distance along the road (existing layer) in QGIS. Creating Regular points every meter at county level using ArcGIS Desktop? gives solution for ...
1
vote
1answer
14 views

Splitting multiband raster into multiple bands using ArcGIS ModelBuilder?

I'm using the ModelBuilder functionality in ArcGIS, and would like to take a raster that contains 4 bands, clip it with a polygon and then make NDVI from the clipped file. To do that, I need access to ...
2
votes
2answers
10 views

Can't continue scrolling on mobile devices when a map occupy all the screen

We have an issue on mobile which is the user can't keep scrolling if the there is a map on the page and it occupies the whole screen. Here is the code: // center of the map var center = [-33.8650, ...
1
vote
0answers
8 views

Convert and plot python basemap and netCDF file in UTM zone 45N

I have a netCDF file with precipitation output for one year. I have a problem with aligning the basemap and netCDF file, and plot them in the same coordinate system. The netCDF file covers the ...
3
votes
2answers
832 views

Creating Regular points every meter at county level using ArcGIS Desktop?

I have a need to create regular points with a coordinate every meter in a county. I've tried several methods including Hawthes Tools in ArcMap9.3, ET GeoWizards, and the standard Toolbox. I have ...
2
votes
0answers
16 views

How can I change the origin (top left corner) coordinates of a raster using PyQGIS?

I am developing a python plugin for QGIS. The purpose of the plugin is to properly open an HDF5 dataset as a raster. Opening and displaying the raster can be done without the need for a plugin, ...
1
vote
1answer
347 views

multiple shapefile export to kml

I 'm new in Python script and i want to export shapefiles in the folder as the kml file with define layer files. for single shapefile it work perfectly refer below script. But I want to export 4 ...
1
vote
0answers
19 views

Using SVG file to fill polygon using QGIS- problem

I try to fulfill polygon with SVG file (which created with inkscape) but when i load the file into QGIS by this way: i get polygon layer with no symbology: Now, i red Using SVG from Wikipedia ...
2
votes
0answers
19 views

PostGreSQL Shapfeile import failed

I am very new to PostGIS/Postgresql. In fact I downloaded it because of the answers I got in my this question: Distance between centroid and farthest point of polygon I installed both Postgresql and ...
0
votes
0answers
21 views

How to define border colour for rule-based style using PyQGIS?

I use the following to create a Rule-based style for a given layer which includes defining a label, expression and colour fill: from PyQt4.QtGui import QColor layer = qgis.utils.iface.activeLayer() ...
1
vote
0answers
18 views

why when i use from mosaic to new raster the created raster has some pixels with 0 value

Why when i use from mosaic to new raster the created raster has some pixels with 0 value? I have 2 map that each of them individually has a value (it is volume of run off for pixels) but when i ...
0
votes
0answers
7 views

Importing shapefile issue postgis. no import made or recognized reference

I am doing an exercise where I am about to load shapefiles into i PostGIS-database. I am doing it from an already created database and schema, this will mean that the only new item is the table that ...
1
vote
1answer
180 views

How to select all polygons where neighbor vertex points are below a distance threshold in arcmap

I have a shapefile with over 100k polygons (some of them have holes in them but apart from that they are simple polygons - no multipart). I want to loop through all of these polygons and select only ...
0
votes
1answer
10 views

proj4 fails to create projection with “+units=degrees”

basically my problem is that pj_init_plus works fine with +proj=longlat +ellps=WGS84 +datum=WGS84 +no_defs but fails with +proj=longlat +ellps=WGS84 +datum=WGS84 +no_defs +units=degrees I ...
0
votes
0answers
9 views

Batch Process for GDAL Georeferencing in windows command line? [on hold]

I used Georeferencing using GDAL? for georeferencing images and the thing is i have lot of images in a folder and a csv file which has the image name in a column and x-min,x-max,y-min and y-max in a ...

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