[R-sig-Geo] Merging Shape files

[Zia Ahmed]

You welcome.

If you are interested in geospatial analysis in python, you check this:

https://zia207.github.io/geospatial-python.io/

Best
Zia

On Wed, Mar 18, 2020, 10:45 AM Dexter Locke <dexter.locke using gmail.com> wrote:

> Zia: this is a fabulous resource!!
>
> Thanks for sharing,
> Dexter
>
>
> On Wed, Mar 18, 2020 at 10:37 AM Zia Ahmed <zia207 using gmail.com> wrote:
>
>> Please  check this:
>>
>>
>> https://zia207.github.io/geospatial-r-github.io/geoprocessing-vector-data.html
>> Best
>> Zia
>>
>> On Tue, Mar 17, 2020, 10:39 AM Dexter Locke <dexter.locke using gmail.com>
>> wrote:
>>
>>> Within st_join() see the options like "left = TRUE".
>>>
>>> You may also want to look at st_intersects()
>>>
>>> Here are other helpful reference websites:
>>> https://r-spatial.github.io/sf/reference/geos_binary_pred.html
>>>
>>> https://cran.r-project.org/web/packages/sf/vignettes/sf3.html
>>>
>>> -Dexter
>>>
>>>
>>> On Tue, Mar 17, 2020 at 10:29 AM El Mechry El Koudouss <
>>> eelkoudouss using fordham.edu> wrote:
>>>
>>> > Dear readers,
>>> > I downloaded a shapefile with data on crime incidents in Washington DC
>>> in
>>> > 2016 (available here:
>>> > https://opendata.dc.gov/datasets/crime-incidents-in-2016) and another
>>> > shapefile with data on parks and recreation areas, also in Washington
>>> DC
>>> > (available here:
>>> > https://opendata.dc.gov/datasets/parks-and-recreation-areas).
>>> > I was able to read both shapefiles using st_read() from the sf
>>> package. My
>>> > question is, how can I merge the two data sets? I tried st_join() but
>>> it
>>> > simply resulted in empty columns from the parks dataset getting added
>>> to
>>> > the crime data. Any guidance would be much appreciated.
>>> > library(sf)
>>> > parks <- st_read("Parks_and_Recreation_Areas.shp")
>>> > crime <- st_read("Crime_Incidents_in_2016.shp")
>>> > df <- st_join(crime, parks)
>>> >
>>> > --
>>> > El Mechry, El Koudouss (Meshry)
>>> > Graduate Research Assistant
>>> > Center for International Policy Studies
>>> > Fordham University
>>> > Department of Economics
>>> > Website: www.meshry.com
>>> >
>>> >         [[alternative HTML version deleted]]
>>> >
>>> > _______________________________________________
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>>> > https://stat.ethz.ch/mailman/listinfo/r-sig-geo
>>> >
>>>
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>>>
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>>

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