0
votes
1answer
5 views

How to create a Vector Grid…If I need to create a grid layer of 2 km sq., what should I put in the X and Y parameters

How to create a Vector Gird polygon layer and what should put in the X and Y parameters when I would like to create a 2 km sq grid polygon
0
votes
0answers
3 views

How to extract EVI from MODIS hdf data from several time using MRT?

I have been using Modis Reprojection Tool (MRT) to extract EVI from MODIS hdf files. So I have 23 MODIS hdf files from 1 year (16 days temporal) but from the same scene (h28v09). How to extract EVI ...
1
vote
0answers
9 views

Selection by adjacent polygon features

First time posting, but long time reading of this forum. My problem is I've a large polygon shapefile with lots of features from a model output, I need to remove anomalous features which are joined ...
0
votes
0answers
4 views

Land-Water mask for MODIS 0.05deg grid

I need to create a worldwide land-water mask for a series of MODIS LST/VI images (0.05 deg). I know that each MODIS hdf file contains a land-water mask. However, this mask changes between different ...
0
votes
0answers
6 views

Add scalebar to map only template [on hold]

I want to create a map only - like template, where i will be able to ajust the size/dimensions of the retrieved map but also put a scalebar on it. Is it possible to create such a template?
0
votes
0answers
8 views

Analysis of concentrations

I process images of trace gases concentrations distribution over the layer of atmosphere. My current issue is following one: I need to analyse values of concentrations, rather detect so-called ...
0
votes
0answers
9 views

Clustering geographical data based on point location and associated point values

Given data points with longitude, latitude, and a third property value of this point. How can I cluster points into groups (geographical sub-regions) based on the property value? I searched by google ...
0
votes
0answers
7 views

Getting distance from nearest stream and elevation to nearest stream?

I need to know if there are simple commands for this 2 points: the distance from the nearest stream, D [m], defined as the length of the path that hydrologically connects the location under exam to ...
0
votes
0answers
10 views

Which SQL Server spatial data type to use for UK data in SQL Server?

Which spatial data type should be used for UK data in SQL Server?, i.e. GEOMETRY or GEOGRAPHY? I'm aware of OS National Grid and my understanding is it's an X/Y coordinate system, covering from ...
1
vote
0answers
9 views

How to refresh MapCanvas while PyQGIS-script is running?

I try to write a PyQGIS script similar to this: Use of python console to prepare offline map from WMS (tile downloader). Basically there are two loops to pan the mapCanvas, refresh the mapCanvas and ...
1
vote
1answer
14 views

In Layer spatial reference system units

Can I edit the in layer spatial reference system units? I have 2 shape files, they have the same CRS but they have different in layer spatial reference units? I'm new to QGIS and I don't really know ...
0
votes
0answers
15 views

Finding mean agricultural suitability from the beginning [on hold]

I am a new user of ArcMap.I have downloaded a basemap showing the soil fertility that each colour represents constraints of fertility from FAO(no,very,few ect),the topographic map and the nuts 3 ...
1
vote
1answer
36 views

Understanding why extracted contours offset in QGIS?

I am a beginner at QGIS, and I am trying to extract 1m contours from 5m DEM data. I have clipped a small area from the DEM data (roughly 1.2km by 1.2km). When I go to Raster - Extraction - Contour, it ...
1
vote
0answers
8 views

Error to obtain coordinate reference system argument from a raster image in R

I got an error when i wanted to obtain the CRS from stacklayer. I don´t know what could it be. I need some advice or help to obtain it. This is my code. #LOAD RASTER LIBRARY >library(rgdal) ...
1
vote
1answer
24 views

Improving fuzzy PNG image used as company logo in ArcMap?

Why is my company Logo in the title block of my ArcGIS map blurry? The logo was inserted into the title block as a PNG image and appears blurry when I export the map to PDF.
1
vote
0answers
20 views

I want to cut polygons in a polygon layer.

I want to programmatically cut polygons already loaded in arcmap. For instance if originally I have 1 polygon feature and 1 row in attribute table. When I cut them, I should see 2 independent features ...
0
votes
1answer
15 views

Constructing a weighted graph a.k.a. a road network with distances for a specific area

Pardon my ignorance in GIS/Routing tools as I'm new to it: I have a map in OSM format and wanted to build a routable graph out of it ( to experiment a searching algorithm I have in my PhD thesis). ...
2
votes
2answers
69 views

Creating OUTSIDE_ONLY buffer around polygon using R?

I would like to create buffers in polygons, surrounding my original polygon. However, I want to keep only the "outside polygon", not include also original polygon. In Buffer in ArcGIS I can just set ...
2
votes
0answers
21 views

Generating routes between every point in a set of points in QGIS

I'm looking for a way in which to generate a set of routes between every point in a layer. To be clear, if I have four points [A,B,C,D] I want to get routes: A - B A - C A - D B - A B ...
0
votes
0answers
7 views

data for radius search in shortest path finding? [on hold]

Is there any way for getting data for radius search ( described here: http://orsnz.org.nz/conf36/papers/Engineer.pdf, page 6, point 9.0 ) ? It's used to boost the heuristic for calculating the ...
0
votes
0answers
22 views

The size of the SRTM raster data cells?

The size of each cell of the SRTM 1 arc-second raster data is: 1 x 1 arc-second = 0.00027 x 0.00027 degrees. But of what? 0.00027 degrees of latitude x 0.00027 degrees of longitude? or 0.00027 ...
0
votes
0answers
11 views

EU DEM licensing compared to SRTM and others

Where can I find the actual full license of the EU DEM? That download webpage has a checkbox saying "I am aware that I am downloading non-validated data and I accept to not distribute the information ...
2
votes
1answer
20 views

changing text in an MXD textbox with items from a list in ArcPy

I am trying to create a text label for a series of maps over time. I have a text box with the element name "DateBox" in my mxd. As a filler, it says "Week # here". I want to it say "Week XX", where XX ...
1
vote
0answers
7 views

Identify which map services are locking feature class

I have a feature class in one of my enterprise geodatabases (10.3.1) that I would like to modify but it is locked by a number of ArcGIS Map Services. Is there a way to identify specifically which Map ...
0
votes
0answers
11 views

R Levelplot overlaying two SpatialPolygonsDataFrame on a RasterLayer

I'm having some trouble plotting a RasterLayer and a SpatialPolygonsDataFrame in a level plot in R. Something is wrong with the projection, but I don't manage to understand what. Thanks for your help. ...
0
votes
0answers
9 views

How do you control the width of a column generated by FeatureTable with javascript?

I am generating a table using FeatureTable() and I would like for the columns to be different widths. I can't find anything in the API on how to do it and all of the samples I have seen have all of ...
0
votes
0answers
15 views

Is there an Esri ST_Geometry function to remove m-values?

I'd like to use SQL to select the WKT geometry of an ArcSDE feature class of the type POLYGON M. However, I'd also like to suppress the m-values as I read them. PostGIS has a function Force2D that can ...
0
votes
0answers
15 views

How can I change start and end point of a linestring?

I have a linestring from a pgRouting query. The start point and/or end poit of this line does not connect exactly the points I've clicked on the road and give me all the road segment of that edge ...
1
vote
0answers
21 views

SAGA Gis and QGIS: difficulties in dissolving polygons

I am new in using GIS and I'm having some problems in properly dissolving some polygons. In particular, I have a single layer with about 3,000 polygons (protected areas), some of which overlap (the ...
0
votes
0answers
9 views

How do I assign the result from ST_GeomFromText() to a variable and consume the variable?

This SQL works as is: select field1, field2 from schema1.featureClass1 t1 where sde.st_intersects(t1.shape, sde.ST_GeomFromText('point(99.0 22.0)', 1111)) = 1; Now I need to perform some ...
0
votes
0answers
18 views

Why Does Fiona Crash Python When Creating an Output File?

I've basically followed the Fiona online manual verbatim to write an output file but my code crashes when I call Fiona.open() to create said output file. Traceback reports that the reason for the ...
0
votes
1answer
16 views

Interactive bearing measurement in Esri Production Mapping?

I have ArcGIS Desktop Advanced 10.4 and I want to use ARC Production Feature Builder to measure the bearing between two points just entered on the map, whilst there is a description of this function ...
0
votes
0answers
5 views

Strip characters in Java/QML in App Studio for Arc GIS

I'm trying to change the display text for attachments in the Arc GIS App Studio. I want to strip a number of characters from the front of the string, and a number of characters from the end and keep ...
4
votes
2answers
58 views

PostGIS treating unique geometries as equal

I have two different geometries (albeit very closeby) that Postgres is treating as equal. db=> select '0101000020E6100000C5BCD8C5FEF45DC0AFE29EF87B584740'::geometry = ...
0
votes
1answer
13 views

Rescale raster in R

What's the best way to rescale a raster with range 0, 200 to range -1 to 1 in R? I'm currently using gdal_translate, but this requires that I write out a new file with the updated range. If possible ...
0
votes
1answer
9 views

ArcGIS Model - Iterate Row Selection - Multipal viewsheds

I've a CSV file with 106 rows with data suitable for a viewshed. What I want to do is run an ArcGIS model where it works through the rows and produces 106 viewsheds for me (ideally the data could ...
0
votes
0answers
11 views

ArcGIS Online : update feature service failing persistently

We use FME to upload data to ArcGIS Online, but ran into an interesting error as returned by ArcGIS Online. Has anyone experienced similar issues when updating large volume of data in ArcGIS Online? ...
1
vote
0answers
13 views

What is the default directory for qml-files in QGIS?

I'm using QGIS 2.14.1 on Windows.
0
votes
0answers
11 views

Assigning only odd or only even address ranges [on hold]

Can one assign only odd or only even address ranges to a road with zeros on the unused side, without issues? For example, I have frontage roads that run adjacent to a freeway and will never have ...
0
votes
0answers
16 views

Cannot get python-docx to work with Custom Tool : DLL load failed: %1 is not a valid Win32 application [on hold]

I am currently using ArcMap 10.2, Python 2.7, and Anaconda aka SPYDER to make my output code populate a Microsoft word report. When I use the custom script tool this is the error message I receive: ...
1
vote
1answer
19 views

enable enterprise geodatabase error

I am trying to enable an enterprise database. I right click > enable and then navigate to our organizations keycode file. I get this error: Attribute Column Not found... (see screenshot) This ...
1
vote
0answers
8 views

Using Calculate Value to Replace UTM83 to NAD83 in file name within Model Builder

I am looking to use the Calculate Value tool to replace the UTM83.sid input aerial file name with an output aerial file name using the new projected coordinate system of NAD83.jp2 What do I use for ...
0
votes
1answer
9 views

Geoserver “Could not find a style for layer” error

I have a bunch of layers stored in Geoserver. However, when I try to preview certain layers, a WMS exception gets thrown. <ServiceExceptionReport version="1.1.1" > <ServiceException ...
0
votes
0answers
28 views

Create Service Area free GIS Tools

Is there a way to to something like ArcGIS provides with the Network Analyst with open source GIS tools? What I am exactly looking for is: I am having a roadnetwork and in this roadnetwork I have ...
0
votes
0answers
6 views

NED (NAVD88) to WGS84 heights

I need to convert the 1/3 arc second DEM files from the NED into WGS84 ellipsoid heights. The documentation says that the NED is referenced to NAVD88. I've tried using gdalwarp as follows: gdalwarp ...
0
votes
0answers
7 views

Eps files from map export are not containing a vector image

I have made a custom map export service which exports my map in a range of formats. However I have noticed that .eps files, exported using the arcPy function: arcpy.mapping.ExportToEPS(mxd, ...
2
votes
1answer
21 views

How can I add a second Toolbar Button and Dialog to a QGIS plugin built with Plugin Builder?

I want to create a toolbar with 2 buttons, each button opening a different form. The steps I followed are: Created a plugin using Plugin builder Created a toolbar with 2 buttons by doing the ...
1
vote
2answers
21 views

Display extent indicators in the legend?

Can you link the data frame extent indicator box with your legend so that the legend displays a symbol and description representing the box?
1
vote
1answer
34 views

QGIS Autofill Column help?

I'm working on a soil project and I am trying to add a new field that is called Drainage which is correlated to all of the different soil types (which is a different field). Is there an easy way to ...
3
votes
1answer
21 views

Can you use Bing Maps in offline editing in the ArcGIS Collector app?

Is it possible to use Bing Maps in the offline mode in the ArcGIS Collector app? In ArcGIS collector can I download the map, work offline and sync my edits when I'm using Bing aerials as my base map? ...

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