shapefile

I'm figuring out how to do a Intersection (Spatial Join) between point and polygons from shapefiles. My idea is to get the closest points and those points that match completely inside the polygons. In ARGIS there's a function for match option named CLOSEST and they have defined by: "The feature in the join features that is closest to a target feature is matched. It is possible that two or more join features are the same distance away from the target feature. When this situation occurs, one of the join features is randomly selected as the matching feature." I have a function to intersect points

The census bureau doesn't provide a nationwide shapefile of public use microdata areas (the smallest geography available on the American Community Survey). I tried combining them all with a few different methods, but even the one that de-dupes identifiers breaks once it hits California. Am I doing something silly or does this require a difficult workaround? Here's code to reproduce up to the point where things break. library(taRifx.geo) library(maptools) td <- tempdir() ; tf <- tempfile() setInternet2( TRUE ) download.file( "ftp://ftp2.census.gov/geo/tiger/TIGER2014/PUMA/" , tf ) al <-

I (on Win7) was trying to get my shapefile data ( Here are the data files.) to be displayed using leaflet package. But without any success. I only get the background map tile but not my data. I am able to see my data in QGIS though. I got the following code and description from here . library(rgdal) shapeData <- readOGR(".",'myGIS') ogrInfo(".",'myGIS') leaflet() %>% addTiles() %>% setView(lng = -106.363590, lat=31.968483,zoom=11) %>% addPolygons(data=shapeData,weight=5,col = 'red') %>% addMarkers(lng = -106.363590,lat=31.968483,popup="Hi there") This is what I see in my internet browser. I do

I am using Openlayers3 with Bing Maps to build my application. I have a point shapefile and would like to show it on the map. I could do it using Openlayers2 using the OpenLayers.Layer.GML() construct but am facing difficulty while trying to the same with Openlayers 3. I tried searching for this and the openlayer example gives me an error: 'Cannot read property 'ogc' of undefined'. My shapefile is on GeoServer in my own system. So any help regarding this matter is highly appreciated :) The example you linked is from a very old beta version of OpenLayers 3. You can find the examples from the

I just added French rivers_lines to my D3js generated SVG. It now display a result like : I need to keep the river lines without the artifact. Data : a topojson made of arcs. CSS code: .rivers { fill: none; fill-opacity: .1; stroke-width:1px; stroke: #C6ECFF; } same result with some colors and opacity near zero: fill: #FF0000; fill-opacity: .1; D3 code: rivers = topojson.feature(fra, fra.objects.rivers), //Append rivers svg.append("path") .datum(rivers) .attr("d", path) svg.selectAll(".rivers") .data(topojson.feature(fra, fra.objects.rivers).features) .enter().append("path") .attr("class",