0
votes
0answers
22 views

Count of cells seems larger than original DEM cells in ArcGIS Viewshed Analysis?

I'm running viewshed analysis and when I open up the attribute table of the viewshed, the counts of cells are much higher than the original DEM size. Am I reading this wrong? I need to calculate the ...
1
vote
1answer
33 views

PostGIS: Geometry column registering as GeometryCollection, not converting to MULTIPOLYGON

I'm trying to aggregate data from a tabular data source and then join it to a geometry file (sl_adm2) in PostGIS using a primary key. The geometry file was imported using shp2psql. CREATE TABLE ...
0
votes
0answers
7 views

Erdas Imagine/LPS RPC orthorectification

When creating orthos in Erdas imagine or LPS from geoeye-1 (or other) satellite images having _rpc.txt files, which are referenced in WGS84 generally, what should be the projection of the used DEM? If ...
3
votes
1answer
57 views

Does GPS correct for continental drift? [on hold]

Does GPS correct for continental drift, and if so, how? (I'm mainly interested from the perspective of consumer devices such as smartphones.)
0
votes
0answers
21 views

Counting the number of symbols in the lyr

Counting the number of symbols in the lyr displays 0 count while it counts them in the total count. I have 253 unique values in my F.C and I have created a symbology layer for them and imported it, ...
1
vote
1answer
35 views

Getting only points when importing from OSM to Postgresql

This is my very first time working with OpenStreetMap data so feel free to tell me if I am forgetting important information. I am trying to import some data from OpenStreetMap into PostGreSQL. I ...
3
votes
2answers
19 views

Open popups in a fixed position with Leaflet

I have create my map with Leaflet exactly how I want it (with my markers and externals links). I would like to have the popup always fixes in the top right hand corner (for an example). Is there any ...
1
vote
1answer
24 views

Clipping a raster layer with a shapefile on mac

I am trying to clip a raster layer using the raster clipper function. However, for some reason this is not working for me and I haven't been able to find the answer anywhere. I choose my raster ...
1
vote
1answer
31 views

QGIS Modeler flexibility and errors?

I'm trying to build a simple multi-step selection (by attribute) with the QGIS Modeler. I created a simple sample layer to avoid data-driven errors. Now I want to query the layer and select features ...
1
vote
1answer
25 views

Buffer for features selected in the mapcanvas and writing to csv file

I have some features selected by using "Select Features by Freehand" tool in QGIS and try to find the buffer for those selected features alone and write the city and state names within in the buffer ...
0
votes
1answer
21 views

Calculating number of streams of each order in watershed using ArcGIS Desktop?

I obtained the order of watershed using arcgis as 7. I want to know the number of streams of each order so as to verify horton's law. Is there any tool for it?
1
vote
1answer
23 views

Use raster memory layer from QGIS processing result

I want to apply subsequent QGIS raster processing algorithms in a python script. I want to use memory layers for intermediate calculation results since I am only interested in the end result. As ...
1
vote
1answer
40 views

Why is my map zoomed in so ragged compared to what I actually drawed in QGIS

So overall my map looks the same like what I draw in QGIS. The issue is that when I zoom in, in that case 54x then you can see ragged lines. QGIS Browser That is not what I need. I need high ...
0
votes
1answer
32 views

How to divide map into square grid using ArcGIS Desktop?

I want to divide a map in square grid using ArcGIS Desktop. Is it possible?
0
votes
1answer
9 views

QGIS web client installation: this.projectSettings.capability is undefined

I am trying to debug my configuration of QGIS web client. I have the same problem illustrated here (the GIS-Browser appears but it keeps loading map for the two sample projects ). Yet following the ...
-1
votes
0answers
9 views

table name not updating [on hold]

I enter data view, update the table name in metadata, save it but the table name never changes. Have been having this problem for a couple of weeks now across several different tables.
0
votes
1answer
20 views

gdalwarp `-te -5.8 41 10 51.5 -ts 1980 0` not working with mercator?

I was working with native lat/log projection on etopo1: #donwload: curl -L -C - ...
0
votes
1answer
29 views

ArcGIS Server Only Accessible From Local Machine

I have an ArcGIS server set up. It works, but only when I access the server (or server manager) via a web browser from the server machine itself. I am unable to access the server (using the same url) ...
0
votes
0answers
20 views

Converting Elevation Raster to Contours [on hold]

I am trying to convert multiple elevation raster files into contour lines, but the contour shapefiles all just end up on top of each other on my map. I can't get them to be where they're suppose to ...
1
vote
1answer
29 views

Using only part of inline variable substitution string in ModelBuilder?

I am using an inline variable substiution to alter a field name. I do this within an iteration model in model builder. The inline variable is the name of the feature class which I use as my input for ...
2
votes
1answer
16 views

Odd behavior in a QGIS plugin: my function is triggered twice

I have a plugin with a function (triggered by a button) that selects a specific layer by name, then shows its attribute table. When I close the plugin and open it again, the attribute table pops up ...
0
votes
0answers
24 views

QGIS expression: select from <layer> possible?

I have a project file with many nested layers and would like to query certain layers without having to click on them first. The expression tool however requires me to select the layer I want to query. ...
0
votes
1answer
17 views

simple georef not working

I'm trying to georeference a table by administrative region, but none of my rows are referencing. I have the country name (listed as my 'jurisdiction' column) but no dice. I can't figure out what ...
0
votes
0answers
7 views

On load event for Leaflet proj4leaflet projected geoJSON layer

Can't find proper event for vector layer like on "load", to be fired when this layer is fuly rendered. I add vector features to a layer in Leaflet using proj4leaflet from JSON object like this var ...
2
votes
1answer
21 views

How to delete a column from the attribute table of a SpatiaLite layer?

I want to delete a column from Attribute table but the function "Delete columns" isn't highlighted. (When I am adding new layers I use New SpatiaLite layer, not Shapefile layer). So I have installed ...
1
vote
1answer
26 views

How to select from selection with PyQGIS?

The expression box has a handy "select from selection" button. Is there a way to emulate this with python? I have the basic expressions down, but can't find a way to do this.
0
votes
0answers
26 views

Build my own navigation system [on hold]

I'm sorry but I don't know where to ask this question. I have to develop a navigation program in my artificial intelligence course. To do it, I need a city map. Probably Barcelona. I don't which is ...
1
vote
0answers
17 views

How to load “soil types” in QGis?

I want to show soil transmissivity per pixel. Thus, I determine water holding capacity of each pixel (ignored other effective parameters). Respectively, I wonder, What is the soil data format and How ...
2
votes
3answers
28 views

QGIS python plugin appends values every time it's started

I've written a small python plugin (using plugin builder as base) to simplify the expression process for a given layer (just a few comboboxes that are used to create a query). The combo box populating ...
0
votes
1answer
22 views

Doing same calculation on different Raster files?

I am doing the work of change all null pixels to a value of -1 in the raster file X with raster calculator by using following syntax: Con(IsNull("X"),-1,"X") However, I need to do the same work on ...
1
vote
0answers
37 views

Problem between files with same coordinate reference system

I have 2 shape-files. The first created with Qgis and the other with R studio(driver=ESRI). When I import them in qgis i see they doesn't "fit". Both have EPSG:4326 - WGS 84. The only difference I ...
0
votes
0answers
30 views

ArcGIS JavaScript API JSONP request

I am trying to add featues to esri.layers.FeatureLayer from response of JSONP request with esri.request. Interestingly I have right response and all features are perfectly shown on the map,BUT I get ...
0
votes
0answers
4 views

How to import Esri Raster to IDRISI with NoData value?

I made some point features in ArcGIS Desktop to build training samples to import to IDRISI. I had 7 classes and convert the feature to raster to build the signature in IDRISI. When I import the data ...
1
vote
0answers
17 views

How to Open Google Earth in a Remote Desktop Session?

I have a Windows 7 PC with Google Earth installed. Sometimes I need to connect with Microsoft Remote Desktop from my MacBook Pro to the Windows 7 PC. If I've Google Earth (Pro or not) already opened ...
0
votes
1answer
25 views

Import GeoTIFF into MapInfo - why “control points”, and how to batch-create TAB files?

OK, so I am largely hostile to commercial software with 'proprietary' formats, but a colleague only knows MapInfo. I have a bunch of GeoTIFFs (produced by gdal-merge of JPG/JGW-filepair hi-res aerial ...
1
vote
1answer
32 views

new layer from calculations with fields of other layers in QGIS

I've two layers, both with the same fields: A, V, where A is the shape's area and V a value given by me. I want a new layer with shape created by the intersection of the other layers' shapes and a ...
0
votes
0answers
15 views

Extend/change Leaflet Marker class to put DivIcon markers in another map pane

Leaflet uses different panes for different content. Markers are in the markerPane div and Popups are in the popupPane. I find the DivIcon class a lot easier to use than the custom layer because of ...
0
votes
1answer
17 views

Where can I get the Cadinput plugin for QGIS

From Stackexchange, I got to know that Cadinput plugin could do this work. I need to create a line feature specifying the desired length and bearing in an open source GIS (Preferably QGIS) as in CAD ...
2
votes
1answer
9 views

Is it possible to render map tiles with a Nominatim PostGIS db?

I've imported a OSM database using Nominatim's setup.php. It's possibile to use some software to render the tiles using that database, or I have to re-import in a different DB for Mapnik et similia? ...
1
vote
0answers
21 views

Problem with QGIS - Attribute names are shown as _1,_2,_3 … and Strings are displayed as “NULL”

Whenever I look at the attribute table or at the attribute dialog for a shape, the attribute names are shown as _1,_2,_3, ... In the attributes, Strings are generally displayed as "NULL". Numbers are ...
1
vote
1answer
24 views

How to do a buffer operation for a polygon drawn by the user using python in QGIS

I have a polygon drawn on the map canvas.Say the polygon would be drawn by using "Measure Area" tool in qgis.Now, I want to do buffer for certain distance around that polygon.I can see the below ...
0
votes
1answer
22 views

Transparent custom legend with mapbox/leaflet.js

I am building a map with mapbox.js. I have created a custom legend and want to make it partially transparent, but can't figure out the right CSS. Here is my legend html snippet: <div ...
0
votes
0answers
11 views

Inserting JSON Data into table for GeoServer? [on hold]

I'm very frustrated trying to fix the following code. I'm new in this and I'd like a little help here: First, I have the following code and It works perfectly: I received a JSON Data from Geoserver ...
0
votes
0answers
15 views

Aligning to DEM after TIFF conversion to GRID?

I can convert a TIFF (NASS Cropscape) by using Create Raster in my .gdb or Export to other Format. However, all efforts to align the extent to an existing DEM have escaped me! I have tried Snap ...
2
votes
1answer
40 views

Why processing.runalg(“gdalogr:rasterize”…) is not creating out files when running in the QGIS 2.6.0 console?

I want to use the QGIS python scripting functions to turn to rasterize a point vector using many different dimensions. Right now my code looks like this: import processing RasterPixelSize = ...
0
votes
0answers
21 views

Programmatically get list of adjacent blocks from US Census [duplicate]

I am currently doing a research project right now where I am looking at US Census Data. I am looking at data at the Census Block level and would like to pull a list of adjacent blocks. And by ...
0
votes
0answers
17 views

ESRI internal process fails using data created by ESRI — suggestions?

We have a complex process where we compute the distance a boat will travel. We then take our waterway rasters, apply any blockages and delays to them, and create the FullCostArray to get the time it ...
1
vote
1answer
20 views

Can't compile plugin builder plugin in QGIS 2.4 (Windows)

I'm trying to build a basic plugin using plugin builder but I can't even compile it. I tried following a few tutorials and just trying to compile whatever but that always results in the same problem. ...
0
votes
1answer
35 views

Mean Center/Median Center tool providing points mathematically centered but physically appearing in the wrong location

To create population weights, I'm using the Mean and Median Center tool to find the center of our populations in census tracts. However, I've noticed that some of the points that are popping up are ...
0
votes
1answer
13 views

Openlayers Vector Layer Features are empty even after DrawFeature executed

I am new to Openlayers and Javascript. I am creating a web map that will allow users to draw shapes on top of a base map. I'm trying to figure out how to access the coordinates of the shapes that are ...

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