Databases
StackOverflow2013
Postsdbo
PO
 

Note that there are some explanatory texts on larger screens.

plurals
  1. PO
    primarykey
    data
    text
    <p>After downloading the data file, I can read directly with raster. I choose band 221 that (if I am not wrong) it is what you need according to <a href="http://www.nco.ncep.noaa.gov/pmb/products/gfs/gfs.t00z.pgrb2f00.shtml" rel="noreferrer">this table</a>:</p> <pre><code>library("raster") t2mc &lt;- raster('gfs.grb', band=221) &gt; t2mc class : RasterLayer band : 221 (of 315 bands) dimensions : 361, 720, 259920 (nrow, ncol, ncell) resolution : 0.5, 0.5 (x, y) extent : -0.25, 359.75, -90.25, 90.25 (xmin, xmax, ymin, ymax) coord. ref. : +proj=longlat +a=6371229 +b=6371229 +no_defs data source : /home/oscar/gfs.grb names : gfs </code></pre> <p>You don't need the whole extent so you use <code>crop</code> to get the desired extent:</p> <pre><code>e &lt;- extent(-40,40,20,90) tt &lt;- crop(t2mc,e) </code></pre> <p>I have tried to display the <code>tt</code> raster with <code>plot</code> without success. However, it works correctly with <code>spplot</code> if you use a different extent (89.5 instead of 90):</p> <pre><code>e &lt;- extent(-40,40,20,89.5) tt &lt;- crop(t2mc,e) spplot(tt) </code></pre> <p>Now we have to add the administrative boundaries:</p> <pre><code>library(maps) library(mapdata) library(maptools) ext &lt;- as.vector(e) boundaries &lt;- map('worldHires', xlim=ext[1:2], ylim=ext[3:4], plot=FALSE) boundaries &lt;- map2SpatialLines(boundaries, proj4string=CRS(projection(tt))) </code></pre> <p>and change the palette:</p> <pre><code>rgb.palette &lt;- colorRampPalette(c("snow1","snow2","snow3","seagreen","orange","firebrick"), space = "rgb") spplot(tt, col.regions=rgb.palette, colorkey=list(height=0.3), sp.layout=list('sp.lines', boundaries, lwd=0.5)) </code></pre> <p><img src="https://i.stack.imgur.com/53ReY.png" alt="spplot result"></p> <p>If you prefer the <code>latticeExtra::layer</code> approach, you can achieve a similar result with this code:</p> <pre><code>library(rasterVis) levelplot(tt, col.regions=rgb.palette, colorkey=list(height=.3)) + layer(sp.lines(boundaries, lwd=0.5)) </code></pre>
    singulars
    1. This table or related slice is empty.
    1. POR crop raster data and set axis limits
      singulars
      1. PTQuestion
    1. PTAnswer
    1. This table or related slice is empty.
    1. USOscar Perpiñán
    plurals
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. POR crop raster data and set axis limits
      singulars
      1. PTQuestion
    1. This table or related slice is empty.
    1. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTUpMod
    2. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTUpMod
    3. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTAcceptedByOriginator
    1. COGracias @oscar-perpinan Your suggestion works fine. I'm gonna look for additional spplot options for the axis, title and so on... Thanks
      singulars
      1. PO
      1. USpacomet
    2. COI will still look for a solution with plot.
      singulars
      1. PO
      1. USpacomet
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload