All Questions

2
votes
0answers
20 views

Mapfish 3 print service, GeoServer 2.15, and Jasper Report set up

I've been going through this article, this Mapfish documentation and this Geoserver doc (apparently out of date) in attempt to get the Mapfish3 print service going in order to eventually use in my web ...
0
votes
0answers
20 views

Finding best routes using ArcGIS Pro?

I'm trying to find the best route through multiple points, considering traffic, speed limit, one way, and so on. ArcGIS online has Plan Routes functions which we only need to provide point feature ...
3
votes
1answer
31 views

Using SAGA GIS 7.X modules in QGIS

Is it possible (and how) to use the SAGA GIS 7.x modules in QGIS (as well as for GRASS GIS)?
0
votes
1answer
25 views

QGIS - processing area and calculating volume of polygon with know elevation from a DEM

I got a DEM of a watershed and I need to create a dam at a fixed elevation (with a rectangular polygon corresponding at the top of the dam) and calculate it's area (including the slope (fixed value) ...
1
vote
1answer
24 views

Make FeatureCollection from Features in Google Earth Engine

I try to add a list of Features into a FeatureCollection with ee.FeatureCollection but it raises the following Error: * "FeatureCollection (Error) Collection, argument 'features': Invalid type. ...
0
votes
0answers
25 views

Updating date attribute field using data in same ArcMap attribute table? [on hold]

How can I use the ArcMap 10.4.1 field calculator to update a date field using data from another date field? I want to do this using field calculator as how to update a text/string field. Okay ...
0
votes
0answers
15 views

Linking Widgets

I'm new to Carto and would like to display multiple layers of data on the map for the year the user selects from a widget. How would I link the layers so that one click on a year widget will filter ...
2
votes
1answer
61 views

Is there a way of finding the average distance of selected features in a layer

My problem is i have a layer with thousands of vectors in a layer. Using the 'select features by area' tool I have used the tool to select vectors within a 100m^2 area but I want to find the average ...
2
votes
0answers
25 views

Using intersect in QGIS Python gives error “no geometry”

I am using the QGIS Python Console to automate some bulk processing. I want to create a Voronoi polygon layer from point data (solved this part) and then from a folder of shapefiles clip the Voronoi ...
1
vote
2answers
56 views

Need a specific field in FME KMZ to shapefile conversion

I am converting a KMZ to shapefile and need to see a field called "Type Name", but it is not in any of the shapefiles' attribute tables. I have every name exposed in Format Attributes in the Reader ...
0
votes
1answer
19 views

Google Earth Engine: Any way to have variable min and max in one visualization parameter?

What I mean is: I'm using the "3 standard deviations" value to visualize my data, but this changes seasonally so I need to update what the values actually are for each image. Can I create a "3 ...
1
vote
0answers
18 views

Using “Endpoint Must Be Covered By” topology rule?

ArcMap 10.5.1 Windows 7 SP 1 Creating a drainage network. All runs of pipe are straight, and therefore must be capped on either end with a structure. So, I created a new GDB, FDS, and a set of ...
3
votes
1answer
38 views

Getting Unique Intersections of Multiple Polygons Efficiently in Python

I would like to get a list of all polygons that are intersections of other polygons. However, that list of intersections cannot self-overlap. For example, if I have a triple Venn diagram, I would ...
0
votes
2answers
22 views

Changing aspect ratio of legend in ArcMap?

I'm making some good ol' maps at work (Using 10.x) and I'm having difficulty getting my legend to fit with the amount of descriptive text I have and the amount of space available to me (as well as to ...
0
votes
0answers
26 views

Update extent in MultiPolygon postgis layer layer do not work

Wen trying to automatically update extent, nothing happens and extent still covers whole planet. Name ... Source dbname='postgres' host=localhost port=5432 user='postgres' sslmode=disable key='"id"' ...
0
votes
0answers
20 views

Seeking script to make DEM from countours in PyQGIS? [on hold]

Does anyone know how can I make Digital Elevation Model in QGIS using python console or has a ready script for it?
0
votes
1answer
18 views

Finding Percentiles from a List in Google Earth Engine

I am using Soil Moisture data from the FLDAS model, and have reduced the data down to a list containing a series of means. These means are average Soil Moisture for the Kenyan dry season (January ...
0
votes
0answers
17 views

Corine Land Cover data is not the same as in reality

I downloaded a CLC2000 shapefile and clipped it after a county shapefile in QGIS. The goal was to calculate the total land area, but the amount obtained of 983.759 Ha does not coincide with the real ...
0
votes
0answers
21 views

Clipping by mask results in blank output

After clipping by mask in QGIS 3.6 the output file has been blank (empty). Raster file and vector mask file have the same projected CRS: USER:100029 - * Generated CRS (+proj=igh +a=6370997 +b=...
2
votes
2answers
36 views

Counting points within polygon using PyQGIS?

I have one polygon and onde shp of points (some within and others without the polygon). I have tried the following code: layers = QgsProject.instance().mapLayers() for feature in layers['...
1
vote
0answers
24 views

Error georefencing an aerial image with QGIS (for relatively small area)

I have an aerial image (.jpg format) of a relatively small site and have been trying to georeference it and generate a corresponding .tif file. I followed several online tutorials, but I keep getting ...
0
votes
2answers
30 views

Seeking Uruguay or South America DEM or DTM? [on hold]

Is there any DEM (Digital Elevation Model) or DTM (Digital Terrain Model) for Uruguay or South America? I am aware of the Renare for Uruguay.
1
vote
0answers
26 views

Extract longest flow path in ArcGIS pro

I did calculate Hydrology with Spatial Analysis tools==> Hydrology and now, I have streams and Watershed. In each watershed, I need to extract the longest Flow as a polyline for calculate slope. What ...
1
vote
1answer
13 views

esri/dijit/editing/AttachmentEditor use proxy when viewing attachments

I'm trying to figure out why the ArcGIS JavaScript API AttachmentEditor does not use a proxy when viewing attachments. I have my proxy set up correctly, and it uses it in every other situation but ...
1
vote
1answer
27 views

QGIS3 data defined overide not active

In QGIS 3.4 MADEIRA, I get no active "data defined override"; I click on the sybol right toio "Size", that I want to modify with a function. The words "data defined override" are pale grey and italic, ...
1
vote
1answer
28 views

Calculate area of overlap within polygons

ArcGIS Pro 10.6 I have a polygon layer with a column of 5 unique values, class names. I have a second polygon layer with a column of unique values, Parcel number. Each parcel will have multiple ...
0
votes
0answers
16 views

Reclass raster map areas smaller than specified area size

I need to reclassify raster areas smaller than 100m2 (0.01 ha) to new ones. r.reclass. area from GRASS GIS does the job for some raster sizes, but simply stucks/doesn't work on bigger ones (54000 x ...
1
vote
0answers
21 views

Reprojected raster return only zeros from QGIS raster calculator

I am experiencing an issue when trying to use my reprojected raster in QGIS raster calculator; First, my raster is reprojected from degrees to meters. After that, I want to process the layer by ...
0
votes
2answers
26 views

Adding a table and styling it in arcgis online pop up

I am researching adding a table and styling the table in a popup in arcgis online. Could someone provide me a html, css, and javascript examples? I am fairly new at these languages, but I am hoping ...
1
vote
0answers
7 views

Batch Saving Raster DTm and choosing type in QGIS 2.18

Follow on question from the following Previous question batch saving 10m DTM layers using python console I would now like to set the output of my Raster .tif files to Float32 as by default the .asc ...
0
votes
0answers
43 views

QGIS GRASS plugin not found?

I have seen this question come up before and have tried the related fixes as best as I could but nothing seems to work. I am running the most recent LTR of QGIS, 3.4.8 but my GRASS plugin cannot be ...
0
votes
1answer
22 views

Adding multiple feature classes (gdb) to map file (aprx) by using addDatafromPath in ArcPy?

I have some problems adding multiple feature classes (not only a single one) from a geodatabase to a map file in an ArcGIS Pro project and I'm wondering if someone knows of a solution to this. To be ...
2
votes
1answer
23 views

Discrepancy in conversion from NAD27 to NAD83

In Southern California, where I live, multiple sources of information seem to say that the conversion between NAD27 and NAD83 is almost purely in the east-west direction (about 80 meters), with almost ...
0
votes
0answers
53 views

Loading table of SDO_GEOMETRIES (multipolygons) in Leaflet? [on hold]

I'm trying to extend an application built in Oracle APEX 19 - I have a table in Oracle 12 (apex.oracle.com), with 380 rows (polygons and multipolygons - some with voids), representing municipalities (...
2
votes
1answer
25 views

PostgreSQL- query a raster by XY

Windows 10, PostgreSQL 11 I successfully managed to export a .tif raster into PostgreSQL using raster2pgsql: raster2pgsql -s 27700 -I -C -M -Y "D:\Data_Location\country.tif" -F -t 50x50 public....
2
votes
2answers
18 views

Information in gdalinfo not shown

I have a geotiff and I checked it's metadata using gdalinfo.exe: Driver: GTiff/GeoTIFF Files: C:/image_test.tif Size is 3956, 34151 Coordinate System is `' GCP Projection = GEOGCS["WGS 84", ...
1
vote
1answer
28 views

Simplifying polygon

I am trying to simplify the overlaying polygon (green). Aim is to fill the area which is marked orange (underlaying polygon). Which tool can I use? I have tried v.generalize and v.clean but none seem ...
1
vote
1answer
27 views

UpdateCursor: value from different rows (ArcPy) [on hold]

I am new to ArcPy. I have an attribute table with the following columns and fields I want to fill up the column Combined as follows: If number contains 2 categories, "combined" will be A,B. If ...
0
votes
0answers
14 views

QGIS 3: ALKIS vs Google Satellite arange Layer congruently

ist possible to move the google layer by offset to fit the (correct positioned) alkis layer? (Alkis: UTM Zone 32N) I know I can change the projection, but I tried some without success. My Project ...
0
votes
0answers
14 views

QGIS SCP plugin classification error [on hold]

I'm using QGIS with the SCP plugin. I want to segment hedgerows in my satellite image. So, with the plugin, I selected different area for the Nearest Neighbor algorithm. I have a correct preview of ...
3
votes
1answer
63 views

Building single sided buffer around categorized polygon layer

I need to build a 100m buffer around a categorized polygon layer using QGIS 3.2. The layer has four classes and no holes. The difficulty here is, that the buffer needs to be split into the 4 ...
1
vote
2answers
31 views

Converting point to polygon in a given distance

I'm working in QGIS 2.18 but I can work with QGIS 3 or ArcMap 10.2. I have a multipoint layer providing from a lasDataset where I've isolated the buildings. I want to create a polygon layer where ...
2
votes
1answer
23 views

Spatially join point and polygon attributes in FME

I'm new to FME, and most of the time I work with ArcGIS Pro. I have a few building polygons, and a few points containing additional information. Now, in ArcGIS Pro I can spatially join these two, ...
2
votes
0answers
30 views

Grouping layers by attribute value and finding nearest neighbour using QGIS?

I am new to QGIS. I have two layers (layer_a and layer_b) consisting of two sets of points. If I want to find the nearest point in layer_b for each point in layer_a, I can just use the Distance ...
0
votes
0answers
18 views

GeoServer on AWS EC2 [closed]

How to install GeoServer on to AWS EC2 instance for Windows? What are the steps to install a GeoServer on AWS? Actually I am attempting to create a web map in OpenLayers by pulling in layers from ...
2
votes
1answer
43 views

Recover lost polygons from shapefile in QGIS

I've committed a newbie error it seems in GQIS with a polygon shapefile. I wanted to remove about 15 of the 210 polygons, and put those 15 in another file. I made a duplicate of the polygon ...
0
votes
1answer
25 views

Adding mouse move to my map using OpenLayers

I'm a new JavaScript coder. I'm adding a mouse move to my map using OpenLayers but it's not working to display coordinate in my mouse. 1 - The first step I wrote this code in my js file: map.on('...
0
votes
1answer
17 views

Create KML “animation” / time domain from separate KML files

I'm currently working on creating a weather map system with leaflet. I'm using grads to create KML files from NOAA/NCEP GFS data in grib2 format. Grads seems to be only able to write out one layer pro ...
1
vote
0answers
29 views

Understanding cosine-weighting?

I am studying a paper where they use a method to calculate the vertical distribution of water content (ice, water vapor, cloud water) from the amount of ice on the martian surface. In the paper they ...
2
votes
2answers
71 views

Same EPSG code for different objects

I started recently working in a project where I need to start using EPSG codes to identify coordinate systems and their elements. I saw that a single EPSG code can identify multiple objects. I am ...

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