Hi Yue, I did specify WGS 84 as a projection system for the same. In Arc, there is no issue at all. However, when I get the data into R, it fails to recognize the coordinate system? I specified it again, but haven't been successful.
Vijay On Wed, Sep 16, 2015 at 11:35 AM, DOU Yue <[email protected]> wrote: > Hi Vijay, > > I haven't tried any of the data, but my intuition as a geographer told me > that you need to specify a projection system for R. > "Coordinate ref: NA." is asking for a projection so that the climate data > can be allocated to geographic locations. Usually you should be able to > find the projection information from the metadata description. > Hope this could help. > > Yue > > On Wed, Sep 16, 2015 at 10:59 AM, Vijay Ramesh <[email protected]> wrote: > >> Hi Ecologgers, >> >> In a situation similar to Alannie's, I am currently trying to get fine >> scale resolution data for climatic variables, land cover and elevation for >> the Indian subcontinent. At this point, I have been using the data from >> Worldclim, which is at 1km scale. >> >> In addition, I am having trouble getting these into R after I clip them >> in ArcGIS. I am getting this error saying: Coordinate ref: NA. >> I have tried most of the solutions uploaded online, but to no avail. >> >> Any help on both would be much appreciated! >> >> Vijay >> >> On Tue, Sep 15, 2015 at 9:27 AM, daniel haberman < >> [email protected]> wrote: >> >>> Hi Alannie, >>> >>> the CRU dataset has the monthly data you require at 0.5 degree >>> resolution with temporal coverage from 1901 - 2014 globally, however this >>> will require you to average the monthly temperature yourself which can be >>> done using the GDAL package in either R or Python, or manually in ArcGIS if >>> you have the time. >>> >>> http://www.cru.uea.ac.uk/cru/data/hrg/ >>> >>> Best, >>> >>> Daniel >>> >>> On Mon, Sep 14, 2015 at 2:51 PM, Richard Schuster < >>> [email protected]> wrote: >>> >>>> Hi Alannie, >>>> >>>> Depending on your GIS expertise you could use this: >>>> http://cfcg.forestry.ubc.ca/projects/climate-data/climatebcwna/#ClimateNA >>>> and create those raster layers for North America. >>>> >>>> Depending on the resolution you want you could e.g. create a 1km point >>>> grid over NA and use the locations and elevation (from a DEM like here: >>>> http://webmap.ornl.gov/ogcdown/dataset.jsp?ds_id=10003) of those >>>> points as inputs for the desktop version of the ClimateNA tool. Once you >>>> get what you want out of the tool you can create a rasters from those >>>> outputs. >>>> >>>> Cheers, >>>> Richard >>>> >>>> >>>> Am 14/09/2015 um 10:23 schrieb Alannie Grant: >>>> >>>>> Hi Ecologgers, >>>>> >>>>> I am searching for some raster data that is suitable for use in ESRI >>>>> ArcGIS, >>>>> similar to bioclim data (worldclim.org). >>>>> >>>>> I am looking for mean monthly temperature or mean maximum temperature >>>>> (by >>>>> this I mean the average temperature for each month of the year, so >>>>> there >>>>> would be 12 separate files). >>>>> >>>>> An ideal data set will be averaged across a range of years (something >>>>> like >>>>> 1950-2000) and would cover North America or the globe. >>>>> >>>>> I have been searching for quite some time for this data and would >>>>> appreciate >>>>> some suggestions. >>>>> >>>>> I have found a promising data set from the UNEP >>>>> (http://geodata.grid.unep.ch/results.php) "Average Monthly Maximum >>>>> Temperature," however this data is not projecting correctly and is >>>>> therefore >>>>> unusable. >>>>> >>>>> Thanks in advance! >>>>> >>>>> Alannie >>>>> >>>>> >>> >> >> >> -- >> Vijay Ramesh, >> Master of Arts Candidate in Conservation Biology, >> Columbia University >> Dept. of Ecology, Evolution & Environmental Biology >> 10th Floor, Schermerhorn Extension, >> 1200 Amsterdam Avenue, >> New York, NY 10027 >> >> Email: [email protected] >> Website: www.evolecol.weebly.com >> > > > > -- > > > --------------- > DOU, Yue > GeoSpatial Innovation Lab > University of Waterloo > -- Vijay Ramesh, Master of Arts Candidate in Conservation Biology, Columbia University Dept. of Ecology, Evolution & Environmental Biology 10th Floor, Schermerhorn Extension, 1200 Amsterdam Avenue, New York, NY 10027 Email: [email protected] Website: www.evolecol.weebly.com
