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2answers
64 views

How to Generate Points on Corner of Polygon Only

I have a polygon layer made up of grid cells, illustrating a survey system: I'm trying to create a point on each corner of the polygon. I've used a geoprocessing tool called "Feature Vertices to ...
1
vote
1answer
58 views

How to generate random points with minimum distances between points in multiple polygons

I am looking to create random points for a random stratified survey. There are three different categories being surveyed; for each, I have a single shapefile, each containing a number of polygons. I ...
0
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1answer
60 views

Can I tie-in a data collection form with an online map service to crowdsource values for map features?

Apologies if this has been covered before. I've done some research but unfortunately my Google Fu has failed me. I want to be able to collect some simple numeric data from multiple people over the ...
2
votes
0answers
49 views

Computing Shannon-Weiner biodiversity index using QGis

I wonder if anybody has some experience in calculating biodiversity index (such as Shannon-Weiner) using QGis. I am also interested for similar experiences using R scripts within QGis. The analysis ...
2
votes
0answers
86 views

Import vtk file in grass gis

last summer I made the relief of a cave, and at this time I returned with Therion software. This survey is in 3d and I can save it in the formats .Lox, .3d, vtk. I would like to import it in grass or ...
1
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0answers
32 views

Surveying software with geocoding abilities

My company is a market research firm looking for an integrated surveying software that has the potential to geocode on-the-fly via tablet device. Requirements: -Ability to collect rider ...
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0answers
48 views

Web map survey/questionnaire

I have implemented a new web map application in my organization and I want to do a survey/questionnaire for the web map users (both internal and external users) to collect information about what they ...
0
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0answers
30 views

Positional error of line features

Does anyone know how to model the error in the spatial location of a line? I think Survey Analyst extension in ArcGIS had a possibility to construct ellipse errors but it is not available any more. Is ...