Top "Geospatial" questions

pertaining to the geographic location and characteristics of natural or constructed features and boundaries on, above, or below the earth's surface; esp.

Storing Lat Lng values in MySQL using Spatial Point Type

Tech used: MySQL 5.1 and PHP 5.3 I am just designing a new database for a site I am writing. I am …

mysql geospatial
Create SpatialPointsDataframe

I have a dataframe df1 with 10 columns. Two of these columns are lng and lat. I want to create a …

r geospatial spatial sp
Merging multiple rasters in R

I've been trying to find a time-efficient way to merge multiple raster images in R. These are adjacent ASTER scenes …

r merge geospatial raster satellite-image
Developing Geographic Thematic Maps with R

There are clearly a number of packages in R for all sorts of spatial analysis. That can by seen in …

r map geolocation geospatial
How does one represent MongoDB GeoJSON fields in a Mongoose Schema?

MongoDB 2.4 allows the use of GeoJSON objects and a slew of neat functions and indexes that I'd like to use. …

mongodb schema mongoose geospatial geojson
Use MySQL spatial extensions to select points inside circle

I have a table called flags that contains a column called coordinates that is full of MySQL 'points'. I need …

mysql sql geospatial
Formulas to Calculate Geo Proximity

I need to implement a Geo proximity search in my application but I'm very confused regarding the correct formula to …

php mysql math geospatial geo
How to Calculate Centroid

I am working with geospatial shapes and looking at the centroid algorithm here, http://en.wikipedia.org/wiki/Centroid#Centroid_…

c# geospatial centroid
Unable to load DLL 'SqlServerSpatial140.dll': The specified module could not be found

This all new to me, so bear with me... I'm working on a Visual Studio project; it's a web service …

.net sql-server dll geospatial
Open alternatives to Google-maps?

I'm looking for an alternative to Google-maps with all the richness of their API but more open. Does such a …

google-maps geolocation maps geospatial