Questions tagged [tools]

Commands that require interaction with the GUI before an action is performed.

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0answers
439 views

“Data management tools” does not exist under “Vector layer”? [duplicate]

I am using QGIS 2.18.12 and I need to calculate the area of overlap between two shapefiles. Help I've already found for this problem says to use "Data management tools" under "Vector layer" but the ...
0
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1answer
295 views

Any way to create polygons with brush-like tool?

I’m making a hiking map for a small range of mountains. I’d like to show surface coverage, including a few broad categories of vegetation type, rock, sand, etc. I’d like to do this as vector data. I ...
0
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1answer
385 views

Opening script in Toolset using GPToolDialog()?

I need to open a Python Script using GPToolDialog(), but the script is in a Toolset, not in the Toolbox main path. I tried many ways to solve but do not work, examples: Example 1: pythonaddins....
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0answers
104 views

Python script from Python Toolbox do not work and show no error

I have a Python ToolBox with two Custom Python Scripts. The first one works well, but when I try to run the second, there is no errors, but the operation do not run. import arcpy class Toolbox(...
3
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0answers
689 views

Error: 'Raster map not found' in QGIS 2.18.1 GRASS tools

I get the same error in multiple QGIS GRASS tools and I don't understand the error. I have a raster surface height map with some no data spaces I want to fill. The error occurs when using r....
2
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3answers
3k views

Adding buffer in Leaflet?

i'm newbie in GIS. i'm trying to make webgis using leaflet. i already make layer with icon in leaflet. /*layer*/ var layer = new L.GeoJSON.AJAX("GIS/layer/request_layer.php", { ...
3
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1answer
668 views

Make this the only selectable layer (greyed out)

Someone else has tried Creating shortcut (button) for "Make this the only selectable layer" in Python 2.6? but, as pointed out there, the answer doesn't work. When adding "Make this the ...
-4
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1answer
4k views

Generate flood map using qgis [closed]

How can I generate a flood inundation map and flood depth using QGIS within 3 hours?
1
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1answer
194 views

How to add a prefix to unique ID using Attribute Assistant?

I want to add a prefix to my unique id field; for example, “MH123”. I am currently using Attribute Assistant Tool. How can I edit my Dynamic Value Table to add a prefix to my unique ID?
4
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2answers
443 views

Determining best neighbourhood search radius for Topographic Position Index (TPI) for predictive soil mapping?

I'm not sure how to determine the best input values for a search radius to create a TPI for the purpose of predictive soil mapping. Would this depend on the spatial extent of the area I wish to map?...
0
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1answer
314 views

How to fix unusual initial DEM input values and derivative raster output values in SAGA GIS without rescaling?

I am trying to run elevation derivative tools on a provincial DEM provided by the Ontario Government website (Ministry of Natural Resources and Forestry) and I am getting strange values when bringing ...
2
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1answer
418 views

How would I determine my search radius when conducting a Topographic Position Index in SAGA GIS?

When running the TPI tool in SAGA, I get this parameter-entry window: Under the section highlighted in the red box, what do these parameters mean? Do the search/neighbourhood grouping parameters mean ...
0
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1answer
571 views

Creating Topographic Position Index in SAGA GIS?

I am trying to create a TPI from a DEM tiff file in SAGA but keep getting the following result: I'm just not sure what I'm doing wrong.
6
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1answer
653 views

QGIS Calculating Line Lengths and Statistics

I am working through this tutorial: http://www.qgistutorials.com/en/docs/calculating_line_lengths.html In the tutorial we import a shapefile map of railroads,clip the data through a selection/...
1
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0answers
591 views

How to show and access SAGA not shown in Processing Panel in QGIS 2.18.4? [closed]

How to get SAGA modules to show and be usable within QGIS, i.e. from within the Processing Panel? I have tried reinstalling SAGA (now = Version: 2.1.2 64 bit) through the OSGEO4w installer and tried ...
1
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2answers
45 views

Retrieving color information about pixels beneath polygon in ArcGIS Desktop?

I am using ArcGIS for a geology mapping project. I've mapped 500+ features as polygons using a basemap of a planet's surface. I want to get information regarding the "darkness," that is, the greyscale ...
2
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1answer
296 views

Selecting features on PostGIS table from QGIS?

I use QGIS 2.14.11-Essen and PostGIS 2.1.8. This is an issue I had not with previous QGIS versions. I work with LTR version for my work so upgrade to current version (2.18.3) is not possible for now. ...
6
votes
1answer
425 views

Evaluating training samples for supervised image classification in ArcGIS Pro?

Its my first time using ArcGIS Pro and I have started doing a supervised classification. In most software you have some tools such as histograms, scatterplots and/or statistics to evaluate training ...
2
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0answers
39 views

Volume calculation using Mosaic & Cut Tools [closed]

I'm new to ArcGIS and I'm taking an introductory course for it. I have a problem trying to quantify the volume of a lake. The lake is enclosed by two dams which are to be extended from 1909 to 1932 m....
3
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1answer
337 views

Algorithm for Cost Connectivity tool of ArcGIS Spatial Analyst?

For the Cost Connectivity tool in the Spatial Analyst toolbox, what is the algorithm used to compute the minimum spanning tree? The ArcGIS website includes a general description of how the cost ...
5
votes
1answer
855 views

Activating 'missing' standard GRASS utilities in QGIS Processing toolbox

I have been using QGIS and Grass for ages and while I've noticed this issue before, I've not been bothered by it until now. It is (hopefully) a bit of a noob question but when I open GRASS in the ...
1
vote
1answer
194 views

How to get next/previous layer in leaflet?

I want to create buttons to get next/previous layer but i don't know how to build code to make it possible. var bounds = [[0,0], [2048,2048]]; var floor0 = L.imageOverlay('img/Floor-00-map.png', ...
3
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0answers
325 views

Split selected features with selected line from another layer not creating all new features

Trying to use the split selected features with selected line from another layer to split a polyline in 2. I run the tool and get the following output: In the attribute table there are now 2 ...
0
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1answer
765 views

Buffer(s) option missing [closed]

I want to create a buffer on a certain layer that will have radios of n meters. I go to vector->geoprocessing tools -> and then nothing buffer(s) is missing I have enabled the Spatial Query ...
2
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1answer
123 views

Counting within buffers using ArcGIS Desktop?

I am working on a project where I am trying to map affordable housing and bus stops. I have used the buffer tool to find out how many bus stops are there within a one mile radius of each affordable ...
-1
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1answer
171 views

Tutorial for raster analyse in ArcGIS or QGIS [duplicate]

Does anybody know where I can find some good tutorial for raster analyse in ArcGIS or QGIS?
3
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1answer
819 views

MapInfo 'Info' tool - querying by polygon rather than at a point

MapInfo Professional (12.5) has a tool called 'Info' which interrogates the data for all visible and selectable tables when the user clicks at a specific point. It lists all objects from all tables, ...
2
votes
1answer
1k views

How to preserve properties (like -p) in topojson conversion in Mapshaper?

I'm trying to use mapshaper.org to convert some geojson files to topojson, and I need the identifying properties to be preserved. Normally this would be done with the -p flag on the command line, but ...
1
vote
1answer
99 views

Choosing layers for processing tools in QGIS?

Am I right that if I want to choose layers for QGIS processing tools I always have to choose the shapefiles via the path directory, and that I can't drag and drop them from the layer window on the ...
0
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1answer
397 views

How to create (online / svg) map with rivers highlighted and without borders?

I want to create a world map on a website without administrative items such as borders, labels and without roads, only the continent outlines, but with big rivers visible (not like in Google Maps, ...
0
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1answer
107 views

Is it possible to make a geodatabase feature class invisible?

I am working on creating a report for a customer that requires using a couple tools in arcmap then export values to a dbf. They then have to run a crystal report that pulls data from Oracle in the ...
0
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1answer
222 views

Cut Tool or Process to mimic cutting in a “cookie cutter” like fashion

Say I have a sidewalk polygon, and on that segment of sidewalk I have 5 tree grates that I want to cut out of the sidewalk polygon. Is there a tool or an easy process that I could cut out one tree ...
2
votes
1answer
411 views

In QGIS 2.14.0 The measuring tool is set to Meters even after changing it to feet in settings

I need to measure some lengths in feet, in previous versions I could change the units in the drop down window and it would stay on feet now it reverts back to meters, if you take focus off the measure ...
5
votes
2answers
7k views

How to identify feature from multiple layers in QGIS?

I have recently migrated from ArcGIS to QGIS. Is there any way to identify a feature having multiple layers? I am currently working with about 400 shape files and need to know which is the one I'm ...
1
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0answers
119 views

Understanding Mosaic to New Raster treatment of pixel values?

I'm working with arcGIS. I have mosaicked 8 rasters with values ranging from -408 to 180. The new mosaic shows pixel values ranging from 0 to 180.Then I compared cell by cell values from the ...
0
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1answer
36 views

Illustrating the average utilization of trails by hikers

I have a question about illustrating the average utilization of trails by hikers. I have made a survey where I asked the participants which trail they used for hiking.There are a lot of trailoptions (...
1
vote
1answer
540 views

Developing find and replace script tool?

I'm being tasked for developing a script tool that can find ultimately needs to be able to find any string and replace it with another string in an attribute table. Below is what I have so far, and it ...
3
votes
1answer
532 views

QGIS 2.12 Lines to Polygons not work properly

In QGIS 2.12.3 I have a small shapefile with lines (as often occurs in parcel boundary datasets) of 2 vertices each, snapped to each other (no topology errors, no dangles, no intersections). But the "...
1
vote
2answers
140 views

How can you identify the geoprocessing tool that was used to create a layer in ArcMap?

In my Table of Contents, I have a layer that is named "symmetrical differences" but I am not certain it was created using that tool.
1
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1answer
50 views

Which tool for custom queries? [closed]

I'm new to the GIS world, and I'm trying to work out what tool I should start with in order to analyse some data and run custom spatial queries on it. I have a data set representing the recording of a ...
4
votes
2answers
2k views

Recommended utility for editing of GEOJSON files

I have a geojson file with the boundaries and some very basic statistics (population) for all the counties in US. States are enumerated (1,2,...), not named. I also have a csv file with a ...
1
vote
1answer
56 views

Area estimation using raster image

I have a map of trace gas (NO2) distribution over big cities and other anthropogenic objects. The purpose is to estimate the area of distribution. I attached the sample image to illustrate what I do. ...
11
votes
1answer
4k views

Swipe tool in QGIS?

Is there any SWIPE tool in QGIS similar to what you have in ArcGIS.. What I am looking for is a tool to swap fast between two layers. I am comparing sidescan sonar mosaic against bathymetry for ...
1
vote
1answer
856 views

Eliminate Polygon Part tool doesn't eliminate part - a bug?

I'm using the Eliminate Polygon Part tool in ArcGIS to remove dry land surrounded by water (aka islands). Tool Inputs: Condition: AREA Area: 50,000 Square Feet Percentage: 0 Eliminate contained ...
1
vote
0answers
565 views

Alternatives to QGIS difference tool

I have a very large shapefile of building polygons and a shapefile of the country they reside in (England). The building shapefile was built by merging 94 smaller shapefiles. Both files have the same ...
0
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1answer
153 views

Import self-written ArcView 3.2 extension to ArcMap 9.3 or higher [duplicate]

I've found an older self-written extension (.avx) for ArcView 3.2 from a retired co-worker. Unfortunatly I'm not a programmer, but I'd like to use this extension for ArcMap 9.3. or 10.x. Is there any ...
0
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1answer
332 views

Create an Identify Route Locations tool that converts M values

I have a data set with many maritime routes that I would like to see the m values (time) for. ArcGIS's Identify Route Locations tool works exactly as I want it to, however, the m value displayed is ...
0
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1answer
534 views

Mouse Double Click Events

I would like to display a Message Box Dialog when the user activates the -esri selection tool- and double clicks anywhere on the map. or when they doubleclick any feature on the map please note that ...
4
votes
1answer
2k views

Why is Python AddIn toolbar showing all “Missing” tools/buttons?

I am horribly new to coding with python. I made a toolbar using the wizard and old bits of VBA code. I created a button to search by map number, a tool to calculate area from UI and a second tool ...
0
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1answer
136 views

add vb6 tool to arcmap 9.2 (on windows 7 64bit machine)

I have a vb6 project which develop a tool for use in arcmap several years ago. And I managed to add the tool in arcmap 9.2 (windows xp) by: In arcmap -> Customize -> Add from file -> choose the dll ...