[gradsusr] Hillshade

[Jennifer M Adams]

I had to google it — 'hillshade’ is a handy GIS function for making topography look cool in a 2D plot. Best I can offer is the formula used for the topographic background maps in the forecast maps at wxmaps.org. Start with a high-res topo data, e.g.:

ga-> sdfopen http://monsoondata.org:9090/dods/topo/rose/etopo05
ga-> z = maskout(rose,rose)
ga-> div = hdivg(z,const(z,0))

—Jennifer

> On Feb 8, 2018, at 12:38 PM, Thomas Davies <tsd.davies at gmail.com> wrote:
> 
> Hi,
> 
> I was wondering if there is an easy way to plot a map of global / europe hillshade (not elevation) in GrADS? Do you know where I can download such data that can be used with GrADS?
> 
> Thanks in advance
> _______________________________________________
> gradsusr mailing list
> gradsusr at gradsusr.org
> http://secure-web.cisco.com/1p6Ssd5kMalfOnLwd6YCBh8LmjV9iCdknr3Gi9EQmBqxQW3rz6TEyC1UQIupJv4K_8e6CRP8F-390K66R-_rFqHOd_4x8FwUHwvcLt_vcOEctbnRrd-ZtsFaAnDbbcL-hlFqfTi5jmMbD1wFfNJW4i8AesR1KXzXg5OAd0GScJdhHzzEkBvVmB7EQMs0QltoQt2GDsQ-3-SGo-Y17k3tr9waiTQkOD60UtZ9DHhRjaxKp4FI5vDAPjmqT1T64FEJvKSt6pbBuhOPu8dgZCPDqI5_GzGrqXXsvb3zKOfkSttVmrsPBBzrhPsxaFrQJzUeqRdH1Iv1oJB9jO6RFY-TFsnz4SIkwKD3XXn5IvakjHplBq9W8frh3NUoEwI-IuUQtXRlwkspWzmbAJdVLwgjF-PL1wbeADXvyUvlXxGrpB1A216e-DtT6y4CxFMrEgxFl/http%3A%2F%2Fgradsusr.org%2Fmailman%2Flistinfo%2Fgradsusr

--
Jennifer Miletta Adams
Center for Ocean-Land-Atmosphere Studies (COLA)
George Mason University