0
votes
0answers
6 views

Rasterizing Contours - How to remove 0 values

I want to convert vector contours to a DEM. From other posts, I wanted to utilise the Grass r.surf.contours tool. Initially I converted the vector contour layer to a rasterized contours using the ...
0
votes
1answer
6 views

How to assign CRS to RasterLayer in R

I have a layer with coord. ref. : NA. How can I assign coord. ref. : +proj=longlat +datum=WGS84 +no_defs +ellps=WGS84 +towgs84=0,0,0 to coord. ref. : NA? class : RasterLayer dimensions : ...
1
vote
0answers
6 views

mapquest batch geocoding truncate response

when I use the batch geocoding service I get sometimes a right answer an sometimes an error using the same arguments. I inspect the headers using curl... when the answer is right the headers are: ...
-1
votes
0answers
8 views

Trouble with: RandomForest-classification:Code error “Error in eval(expr, envir, enclos) : object 'band1' not found”

This should work, but gives me an error. require(sp) require(rgdal) require(raster) require(randomForest) setwd("D:/BA-Workspace/DOP_10/orthophotos_abcd/R/test_run_R") rlist=list.files(getwd(), ...
0
votes
0answers
8 views

What type of test could I use to measure the relationship between a layer who has areas with a specific number and a point layer? [on hold]

I trying to analyze two layers one contains points and the other one contains polygons with a value
0
votes
0answers
9 views

Time Slider in CartoDB

I once again have a question regarding this map project I'm working on. I'm trying to add a time slider to my CartoDB map, and the slider appears, but instead of displaying the correct dates and the ...
2
votes
1answer
8 views

Lambert_Conformal_Conic: converting from shapefile to geojson fails

I have a shapefile that also contains a proj file that looks like so: PROJCS [ "MGI_Austria_Lambert", GEOGCS [ "GCS_MGI", DATUM [ "D_MGI", ...
1
vote
0answers
17 views

Script tool: Batch downgrade MXD version

I am trying to take the guts of this code (Batch convert ArcGIS 9x files to 10) and build it into a tool that we can more flexibly use and share around our organization. I think I'm almost there but ...
0
votes
1answer
16 views

How can I insert a bounding box or polygon in a PostGIS geometry field?

I have a field in my table called 'geometry' that was created thus: CREATE TABLE "public"."sites" ( "id" int8 DEFAULT nextval('sites_id_seq' :: regclass) NOT NULL, #... A few MORE fields ...
1
vote
1answer
11 views

date format conversion

I'am using Time Manager and QGIS 1.8.0 and I am stucked at date format conversion. Time Manager needs Gregorian format "YYYY-MM-DD HH:MM:SS.ssssss" in text field and I have thousands of records in ...
0
votes
0answers
8 views

Displaying geojson data in leaflet

I am trying to access and display some data in a geojson layer and would appreciate if someone can take a look at my code below and suggest what I need to do to make it work. The result of the ...
1
vote
0answers
8 views

Is there a way to have a choropleth map in Excel reading data from a sheet?

Is it possible to have a solution similar to ESRI maps for office in which I want basically a geojson file or any file for that matters to render a choropleth map based on data in a sheet? Tried ...
2
votes
1answer
16 views

How to install Apache Web Server from OSGeo4W?

Good morning, I'm trying to create a QGIS web client on my Windows 8 But with OSGEO4W not appear the option to make Apache installs Web Server, as of this writing in several tutorials and ...
2
votes
0answers
16 views

Why is the OSM map itself is not visible in my qgis window?

I'm new in working with QGIS. I have tried to download an OSM map of Rome and its surroundings into my QGIS. As far as I am concerned, I have followed each step which I could find on various ...
1
vote
1answer
65 views

Using Engineering symbols (*.svg) in QGIS?

I was told to evaluate QGIS. It all looks straight forward except for the symbols or icons. I have created svg symbols and when I place my pointer to the obvious blank areas in the symbol library a ...
1
vote
0answers
10 views

Finding equivalent API-supported data to the 2000 Census

I'm having some difficulty choosing Census datasets for a project that involve various SES measures at the block-group level. I'll be looking at things like median household income and percentage of ...
3
votes
1answer
15 views

How can I change the value field when applying symbology from layer using python?

I have a python addin button that creates a layer file from a polygon feature class in ArcMap. I want to take that layer file and, with user input from a combobox, apply it back to the feature class ...
1
vote
2answers
37 views

Making single polygons from a shapefile

I created a shape file a while ago with several (20+ polygons) in it. I was wondering if there is a way to symbolize these polygons with unique symbols. Basically all I actually want to do is color ...
1
vote
0answers
13 views

Map algebra from files in multiple directories

I'm a rookie in python programming. I want to do map algebra for multiple rasters but these rasters are in different folders. Here's the code ive created so far: #Importing modules import arcpy from ...
1
vote
0answers
3 views

z-index issue with infowindow

Hello I currently have a map where my map div covers 60% of the page and 40% is a Fixed Infowindow. My problem Happen with cartodb css and its z-index of div.cartodb-infowindow. Currently my ...
0
votes
0answers
6 views

Erdas Imagine DN to TOA reflectance for SPOT images

I would like to convet DN to TOA reflectance in Erdas Imagine 2013. I see there is a way of doing this for Landsat7 in the Radiometric tab. How can I do this for SPOT2,4,5 images?
0
votes
2answers
22 views

Import shapefiles on my postgis table using R

Using R, I would like to import shapefiles that are in a directory on a geometric table i have on postgresql / postgis. What is the instruction that allows me to do it? EDIT: here is my code to ...
0
votes
0answers
10 views

Testing Android Navigation apps [on hold]

I am working on a navigation app in which I can see my location changing and I follow a definite route. I am facing issues in testing my app , as my position remains static . SO I cannot test it. Is ...
-1
votes
0answers
6 views

How to Importing OSM file into Mysql [on hold]

I've been trying to importing osm file into mysql using osmosis, but still failed, please help me.... Thank before database CREATE DATABASE osm; USE osm; CREATE TABLE IF NOT EXISTS changeset_tags ( ...
4
votes
1answer
57 views

Renaming 1,200 rasters in File Geodatabase using ArcPy?

I've been tasked with renaming a large amount of raster files within a file geodatabase (ArcGIS style). I'm taking weather data which has a name format as such: "G"mmddhhhh I'm trying to add a year ...
1
vote
0answers
32 views

Where can I find “QGIS Training Manual” data? [duplicate]

I can't find data for this lesson in Quantum GIS: 9.4 Lesson: Supplementary Exercise. Can anybody help me?
1
vote
0answers
8 views

Merge polygon based on other line shape file PostGIS

I have a polygon shape file and a line shape file. I would like to merge two polygons which shares the same border along with line shape. Finally the line should be removed in polygon shape file. In ...
-1
votes
1answer
19 views

Most suited Remote Sensing [on hold]

What will be the most suited remote sensing data to use for mapping highways in North America?
2
votes
2answers
16 views

How to add updated tiles to ArcGIS mosaic

I have several hundred aerial imagery raster tiles (in ecw format) that I have loaded into a mosaic dataset. I would now like to 'replace' or 'overlay' an older aerial imagery layer with this dataset. ...
0
votes
0answers
11 views

Gdal_sieve not working?

I'm using the Sieve command within QGIS (Raster > Analysis > Sieve), but when I run the command with any variation of parameters, it completely changes the histogram of my raster data from between ...
2
votes
2answers
49 views

Automated search of misplaced points with Python or Model Builder

I am using ArcGIS 10.2.2. My work is to find points which are misplaced. I want to know if there's a way to automate this using Python or Model Builder? I wish to place this in the attribute table ...
1
vote
0answers
42 views

calculating decimal degrees from coordinates found in an excel table

What is the exact syntax to use when calculating decimal degrees in the field calculator? I know the general formula {i.e. Degree + (minute/60) + (second/3600)} but how do I put this into the gis? I ...
-1
votes
0answers
16 views

Data fusion python code or toolbox [on hold]

Please help me about doing this operations with ArcGIS. How can I do it? Has it a prepared toolbar or python code? Choquet fuzzy integral data fusion Dempster-shafer data fusion Ordered weighted ...
1
vote
0answers
27 views

Best Landsat band for forest classification?

Using Qgis and the Semi-Automatic Plugin for Classification, which are the best Landsat bands to use to classify trees species (in central Argentina)? In Landsat 5, 7 and 8?
0
votes
0answers
10 views

Generate tiles of World (Zoom 0-2), Germany (Zoom 2-12), Some Cities (Zoom 12-15)

I'm creating an offline navigation application. I'm using leaflet for displaying the map tiles. Right now I'm creating the tiles using Maperitive. This works great so far. But I can't open bigger ...
0
votes
1answer
19 views

MapInfo Tab Files - Which feature types are contained?

Without opening the TAB within a GIS package, is it possible to determine which feature class it contains? Could the TAB file be open in notepad and assessed for example?
0
votes
0answers
33 views

Exporting Excel to dBase (*.dbf) table gives error? [on hold]

I am trying to export an excel table to a dbf in ArcMap but it returns an error each time I try; what am I doing wrong? Also, what is a better option to use: dBASE or geodatabase table?
2
votes
0answers
24 views

Setting up qgis web client

I have a problem with setting up a qgis web client on remote server. I set it up on localhost and it runs smoothly, but when I done exactly the same on remote server it is just not working, even a ...
1
vote
1answer
18 views

Determine size of screen/map to limit number of markers displayed

I am writing a JQuery Openlayers javascript web application that connects to a API, which exposes a million geo located points plus metrics and information about the points. One metric is a points ...
1
vote
2answers
37 views

Row-crop field boundaries

I'm on the hunt for field boundary coordinates in the US in the form of GeoJSON, a Shapefile or any structured format that I can use to overlay on a map. I've tried looking at the US Department of ...
1
vote
0answers
22 views

Converting table drawn as polylines in AutoCAD to Excel? [on hold]

I have a table in AutoCAD but drawn as polylines. I wanted to export this table into an Excel spreadsheet. I tried to group the lines to make it a table and tried to export it to Excel but I ...
1
vote
1answer
23 views

CartoD3 chart not displaying - CartoDB

I have tornados table with columns damage,date,month . I used the following code to create a barchart . <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" ...
4
votes
0answers
26 views

arcpy - ascii encoding error when updating field content in SQL Server table

I know there are plenty of posts and blog explanations about unicode errors, but I still can't figure out to handle it in my particular case. So here is my problem: I am writing a Python script to ...
1
vote
0answers
6 views

custom SVG label style - openlayers

My goal is to display rotated labels for roads on my openlayers based webmap. The problem is actually solved (with a custom SVG solution), but i have some problems with the styling of the labels. As ...
2
votes
1answer
26 views

Refering to 0° of longitude/latitude in a range

This is more of a question in diction... In scientific writing, is there a preferable way to write a range, bounded by 0° longitude, in a way similar to "5° W to 10° E" if there is no cardinal ...
1
vote
1answer
22 views

Converting WGS84 points to a 2D x,y point (plotting)

I have been trying to convert the WGS84 style geo-positions to x,y coordinates on a 2D plane. I have looked into many different links, websites, studies and I honestly gave up on finding a plane copy ...
2
votes
1answer
25 views

Atributing fields in arcmap and excel

How do I populate a field in ArcMap (and Excel) with only a specific part of another field's attributes? For example: I want to populate the LATDEG field with only the degree part of a latitudinal ...
0
votes
0answers
9 views

can widget developed by ArcGIS API for flex as an add-in?

I am currently involved in a project needs me to develop a widget using ArcGIS API for flex. It will be integrated to an existing web application. I am confused now because I haven't touch the ...
2
votes
1answer
25 views

PyQGIS - Start/Stop Editing with data Provider - Commiting changes

I want to edit a specific field for a QgsVectorLayer, within a QGIS application. I am facing inconsistent results from my code, ie: changes are not alway commited. Please could someone point me to ...
1
vote
1answer
10 views

OpenLayers feature styling change by the baselayer

How can I have the style of the features on a vector layer depending on the OpenLayers' "base layer"? For example, some base layers are dark images and I need (for the contrast) the features to be ...

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