The act of comparing or the process of being compared.

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3
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2answers
82 views

How to compare a classified raster dataset to another polygon dataset?

I am going to perform an unsupervised classification on my dataset and will get a map as a result. The objective is to rebuild an already existing map (of different soil types) with my new dataset. ...
0
votes
2answers
64 views

Is there a way to use IN filters in OpenLayers?

Is there a way to use IN filters (like the IN operator from SQL) in OpenLayers 2? For example, let's say, I want a filter like this: city = 'Paris' OR city = 'London' OR city = 'Lisbon' In ...
2
votes
1answer
21 views

How to compare a 'predicted' layer with an 'actual' layer for the same study extent?

I have developed a vector layer which predicts which polygons are more or less likely to experience coral bleaching. I now have another vector layer with the same extent with actual coral bleaching ...
2
votes
1answer
101 views

Segment matching on a polyline

I have about 1000+ running routes which I can load into memory as polylines using latitude and longitude data captured from a running watch. From these polylines I would like to be able to identify ...
1
vote
1answer
81 views

How to compare polylines attribute from the same GRID cell in ArcGIS 10?

I need some help because I do not know how to model this issue: I have two polyline shapefiles. They have an attribute that I need to be compared. These are roads from different sources. So, I have ...
0
votes
1answer
40 views

Road network comparisons - how to extract roads that do not completely fall within the buffer

I am trying to compare how well one road network aligns with another - I have created a buffer around the first network and would like to select only the roads from the second network that fall ...
0
votes
1answer
51 views

Comparing routes

I am looking for a way to compare routes of 2 or more persons to be taken by car. Person 1 has a starting point A1 and a destination point A2. Person 2 has a starting point B1 and a destination ...
2
votes
0answers
34 views

How successful are current metadata implementations in achieving its objectives

Metadata infrastructure is well established as an essential practice within the GIS community. Quoting from the FGDC: Metadata helps people who use geospatial data find the data they need and ...
2
votes
0answers
355 views

ArcGIS/arcpy: Geometry object comparison methods not working. Do they take z values into account?

I have an arcpy script that makes calculations based on an input PolygonZ feature class. What I need to do in several places in the script is test whether a point falls within a polygon in 2D. In ...
1
vote
0answers
37 views

Tool, API of or code samples for calculating spatial similarity between Lines

I am migrating a database with a road network to an other external data provider. We have joined our own data about roadworks, temporary speed-limits, etc., using ID and linear referencing on this ...
1
vote
0answers
273 views

Manifold 'Link drawing to query' - can I do this in QGIS?

Manifold GIS allows the creation of dynamic drawings linked to queries. Unfortunately I do not have access to Manifold as my employer refuses to pay for it, so am currently investigating ...
0
votes
0answers
15 views

comparing raster values over one specific transect

I have a raster with water temperature data. I used various kinds of filters over it (smoothing, sharpening filter etc.) in various combination. I want to compare the results, to check which ...
0
votes
0answers
375 views

What is difference between Geo BI (Geo-business Intelligence) and GIS (Geographic Information System)?

I tried finding information with difference between Geo Business Intelligence and Geo IS but unfortunately no clearly answer being found. What is different between Geo BI and GIS and its ...