<div dir="ltr">Well, FWIW - <div><br><div>Here the CRS doesn't round-trip properly, partly as the PROJ.4 string in R is not sufficient, and the date type gets recorded as raw integer (that's ok depending what your target environment will need). Using gdal_translate you could augment the netcdf created here with a proper WKT version, so maybe this is useful in a limited context. <br><div><br></div><div>I tried it so you might as well see the result: </div><div><br></div><div><div>library(raster)</div><div>r <- stack("swe_sub.mdl")</div><div>r</div><div>#class : RasterStack </div><div>#dimensions : 190, 352, 66880, 1 (nrow, ncol, ncell, nlayers)</div><div>#resolution : 30, 30 (x, y)</div><div>#extent : 444345.1, 454905.1, 4430445, 4436145 (xmin, xmax, ymin, ymax)</div><div>#coord. ref. : +proj=utm +zone=13 +datum=NAD83 +units=m +no_defs </div><div>#names : Band.1 </div><div><br></div><div>dt0 <- seq(as.POSIXct("2014-03-01 00:00:00", tz = "UTC"), by = "1 hour", length = nlayers(r))</div><div>r <- setZ(r, as.character(dt0))</div><div>writeRaster(r, "<a href="http://swe_sub.nc" target="_blank">swe_sub.nc</a>")</div><div><br></div><div>system("gdalinfo <a href="http://swe_sub.nc" target="_blank">swe_sub.nc</a>")</div><div><br></div><div>Warning 1: dimension #2 (easting) is not a Longitude/X dimension.</div><div>Warning 1: dimension #1 (northing) is not a Latitude/Y dimension.</div><div>Driver: netCDF/Network Common Data Format</div><div>Files: <a href="http://swe_sub.nc" target="_blank">swe_sub.nc</a></div><div>Size is 352, 190</div><div>Coordinate System is `'</div></div><div dir="ltr"><div><div>Origin = (444345.080000000016298,4436145.280000000260770)</div><div>Pixel Size = (30.000000000000000,-30.000000000000000)</div></div></div><div dir="ltr"><div><div>Metadata:</div><div> easting#long_name=easting</div><div> easting#units=meter</div><div> layer#_FillValue=-3.4e+38</div><div> layer#long_name=layer</div><div> layer#max=3.695244550704956</div><div> layer#min=0</div><div> layer#missing_value=-3.4e+38</div><div> layer#projection=+proj=utm +zone=13 +datum=NAD83 +units=m +no_defs</div><div> layer#projection_format=PROJ.4</div><div> NC_GLOBAL#Conventions=CF-1.4</div><div> NC_GLOBAL#created_by=R, packages ncdf and raster (version 2.3-33)</div><div> NC_GLOBAL#date=2015-04-14 04:29:01</div><div> NETCDF_DIM_EXTRA={time}</div><div> NETCDF_DIM_time_DEF={1,6}</div><div> NETCDF_DIM_time_VALUES=1393632000</div><div> northing#long_name=northing</div><div> northing#units=meter</div><div> time#long_name=time</div><div> time#units=seconds since 1970-01-01 00:00:00</div></div></div><div dir="ltr"><div><div>Corner Coordinates:</div><div>Upper Left ( 444345.080, 4436145.280)</div></div></div><div dir="ltr"><div><div>Lower Left ( 444345.080, 4430445.280)</div></div></div><div dir="ltr"><div><div>Upper Right ( 454905.080, 4436145.280)</div></div></div><div dir="ltr"><div><div>Lower Right ( 454905.080, 4430445.280)</div></div></div><div dir="ltr"><div><div>Center ( 449625.080, 4433295.280)</div></div></div><div dir="ltr"><div><div>Band 1 Block=352x1 Type=Float32, ColorInterp=Undefined</div></div></div><div dir="ltr"><div><div> NoData Value=-3.39999999999999996e+38</div><div> Metadata:</div><div> _FillValue=-3.4e+38</div><div> long_name=layer</div><div> max=3.695244550704956</div><div> min=0</div><div> missing_value=-3.4e+38</div><div> NETCDF_DIM_time=1393632000</div><div> NETCDF_VARNAME=layer</div><div> projection=+proj=utm +zone=13 +datum=NAD83 +units=m +no_defs</div><div> projection_format=PROJ.4</div></div><div><br></div><div>## context of the R session</div><div><div>sessionInfo()</div><div>R version 3.1.3 (2015-03-09)</div><div>Platform: x86_64-pc-linux-gnu (64-bit)</div><div>Running under: Ubuntu 14.04.2 LTS</div><div><br></div><div>locale:</div><div> [1] LC_CTYPE=en_US.UTF-8 LC_NUMERIC=C</div><div> [3] LC_TIME=en_US.UTF-8 LC_COLLATE=en_US.UTF-8</div><div> [5] LC_MONETARY=en_US.UTF-8 LC_MESSAGES=en_US.UTF-8</div><div> [7] LC_PAPER=en_US.UTF-8 LC_NAME=C</div><div> [9] LC_ADDRESS=C LC_TELEPHONE=C</div><div>[11] LC_MEASUREMENT=en_US.UTF-8 LC_IDENTIFICATION=C</div><div><br></div><div>attached base packages:</div><div>[1] stats graphics grDevices utils datasets methods base</div><div><br></div><div>other attached packages:</div><div>[1] raster_2.3-33 sp_1.0-17</div><div><br></div><div>loaded via a namespace (and not attached):</div><div>[1] grid_3.1.3 lattice_0.20-31 ncdf4_1.13 rgdal_0.9-2</div></div><div><br></div></div><br><div class="gmail_quote">On Wed, 15 Apr 2015 at 00:20 Dominik Schneider <<a href="mailto:Dominik.Schneider@colorado.edu" target="_blank">Dominik.Schneider@colorado.edu</a>> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div><p style="margin:1.2em 0px!important">Hi Mike - Thanks for the response and sorry this wasn’t quite clear. IDL data cubes are of the ENVI format and thus also have an associated ascii .hdr file. A dataset with 10 bands is here:<br><a href="https://dl.dropboxusercontent.com/u/5962491/IDLENVIswe.zip" target="_blank">https://dl.dropboxusercontent.com/u/5962491/IDLENVIswe.zip</a><br> There is no time data in the .mdl file, but I know that the 4416 bands are hourly timesteps from 0:00 March 1 to 23:00 Aug 31</p>
<p style="margin:1.2em 0px!important">I could do this in R but was trying to avoid it because R is always so frustratingly slow for these things…the gdal commandline utilities are much more awesome!</p>
<pre style="font-size:0.85em;font-family:Consolas,Inconsolata,Courier,monospace;font-size:1em;line-height:1.2em;margin:1.2em 0px"><code style="font-size:0.85em;font-family:Consolas,Inconsolata,Courier,monospace;margin:0px 0.15em;padding:0px 0.3em;white-space:pre-wrap;border:1px solid rgb(234,234,234);background-color:rgb(248,248,248);border-radius:3px;display:inline;white-space:pre-wrap;overflow:auto;border-radius:3px;border:1px solid rgb(204,204,204);padding:0.5em 0.7em;display:block!important;display:block;overflow-x:auto;padding:0.5em;color:rgb(51,51,51);background:none repeat scroll 0% 0% rgb(248,248,248)">iMac:~/Downloads $ gdalinfo swe.mdl
Driver: ENVI/ENVI .hdr Labelled
Files: swe.mdl
swe.hdr
Size is <span style="color:rgb(0,128,128)">352</span>, <span style="color:rgb(0,128,128)">190</span>
Coordinate System is:
PROJCS[<span style="color:rgb(221,17,68)">"UTM_Zone_13N"</span>,
GEOGCS[<span style="color:rgb(221,17,68)">"GCS_North_American_1983"</span>,
DATUM[<span style="color:rgb(221,17,68)">"North_American_Datum_1983"</span>,
SPHEROID[<span style="color:rgb(221,17,68)">"GRS_1980"</span>,<span style="color:rgb(0,128,128)">6378137.0</span>,<span style="color:rgb(0,128,128)">298.257222101</span>]],
PRIMEM[<span style="color:rgb(221,17,68)">"Greenwich"</span>,<span style="color:rgb(0,128,128)">0.0</span>],
UNIT[<span style="color:rgb(221,17,68)">"Degree"</span>,<span style="color:rgb(0,128,128)">0.0174532925199433</span>]],
PROJECTION[<span style="color:rgb(221,17,68)">"Transverse_Mercator"</span>],
PARAMETER[<span style="color:rgb(221,17,68)">"False_Easting"</span>,<span style="color:rgb(0,128,128)">500000.0</span>],
PARAMETER[<span style="color:rgb(221,17,68)">"False_Northing"</span>,<span style="color:rgb(0,128,128)">0.0</span>],
PARAMETER[<span style="color:rgb(221,17,68)">"Central_Meridian"</span>,-<span style="color:rgb(0,128,128)">105.0</span>],
PARAMETER[<span style="color:rgb(221,17,68)">"Scale_Factor"</span>,<span style="color:rgb(0,128,128)">0.9996</span>],
PARAMETER[<span style="color:rgb(221,17,68)">"Latitude_Of_Origin"</span>,<span style="color:rgb(0,128,128)">0.0</span>],
UNIT[<span style="color:rgb(221,17,68)">"Meter"</span>,<span style="color:rgb(0,128,128)">1</span>]]
Origin = (<span style="color:rgb(0,128,128)">444345.080000000016298</span>,<span style="color:rgb(0,128,128)">4436145.280000000260770</span>)
Pixel Size = (<span style="color:rgb(0,128,128)">30.000000000000000</span>,-<span style="color:rgb(0,128,128)">30.000000000000000</span>)
Image Structure Metadata:
INTERLEAVE=BAND
Corner Coordinates:
Upper Left ( <span style="color:rgb(0,128,128)">444345.080</span>, <span style="color:rgb(0,128,128)">4436145.280</span>) (<span style="color:rgb(0,128,128)">105</span>d39<span style="color:rgb(221,17,68)">' 9.74"W, 40d 4'</span><span style="color:rgb(0,128,128)">25.45</span><span style="color:rgb(221,17,68)">"N)
Lower Left ( 444345.080, 4430445.280) (105d39' 7.97"</span>W, <span style="color:rgb(0,128,128)">40</span>d <span style="color:rgb(0,128,128)">1</span><span style="color:rgb(221,17,68)">'20.58"N)
Upper Right ( 454905.080, 4436145.280) (105d31'</span><span style="color:rgb(0,128,128)">43.92</span><span style="color:rgb(221,17,68)">"W, 40d 4'27.72"</span>N)
Lower Right ( <span style="color:rgb(0,128,128)">454905.080</span>, <span style="color:rgb(0,128,128)">4430445.280</span>) (<span style="color:rgb(0,128,128)">105</span>d31<span style="color:rgb(221,17,68)">'42.49"W, 40d 1'</span><span style="color:rgb(0,128,128)">22.85</span><span style="color:rgb(221,17,68)">"N)
Center ( 449625.080, 4433295.280) (105d35'26.03"</span>W, <span style="color:rgb(0,128,128)">40</span>d <span style="color:rgb(0,128,128)">2</span><span style="color:rgb(221,17,68)">'54.21"N)
Band 1 Block=352x1 Type=Float32, ColorInterp=Undefined
Band 2 Block=352x1 Type=Float32, ColorInterp=Undefined
Band 3 Block=352x1 Type=Float32, ColorInterp=Undefined
Band 4 Block=352x1 Type=Float32, ColorInterp=Undefined
Band 5 Block=352x1 Type=Float32, ColorInterp=Undefined
Band 6 Block=352x1 Type=Float32, ColorInterp=Undefined
Band 7 Block=352x1 Type=Float32, ColorInterp=Undefined
Band 8 Block=352x1 Type=Float32, ColorInterp=Undefined
Band 9 Block=352x1 Type=Float32, ColorInterp=Undefined
Band 10 Block=352x1 Type=Float32, ColorInterp=Undefined
...
Band 4416 Block=352x1 Type=Float32, ColorInterp=Undefined</span>
</code></pre>
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PjwvZGl2PjwvZGl2Pg==" style="min-height:0;width:0;max-height:0;max-width:0;overflow:hidden;font-size:0em;padding:0;margin:0"></div></div><div class="gmail_extra"></div></div><div dir="ltr"><div class="gmail_extra"><br clear="all"><div><div><div>Dominik Schneider</div><div><div>o <a href="tel:303.735.6296" value="+13037356296" target="_blank">303.735.6296</a> | c <a href="tel:518.956.3978" value="+15189563978" target="_blank">518.956.3978</a> </div><div><br></div></div></div></div></div></div><div dir="ltr"><div class="gmail_extra">
<br><div class="gmail_quote">On Tue, Apr 14, 2015 at 12:07 AM, Michael Sumner <span dir="ltr"><<a href="mailto:mdsumner@gmail.com" target="_blank">mdsumner@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><br><br><div class="gmail_quote"><div><div>On Tue, 14 Apr 2015 at 05:46 Dominik Schneider <<a href="mailto:Dominik.Schneider@colorado.edu" target="_blank">Dominik.Schneider@colorado.edu</a>> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div><p style="margin:1.2em 0px!important">Hi - </p>
<p style="margin:1.2em 0px!important">I have some .mdl files from IDL with .hdr header files that I’d like to convert to netcdf.<br>The following code produces a netcdf file with a subdataset for each band in the mdl file. Is there any way to define the bands as the time dimension, in this case 4416 hourly timesteps?</p><p style="margin:1.2em 0px!important">Or is there another tool that can convert this?<br></p>
<pre style="font-size:0.85em;font-family:Consolas,Inconsolata,Courier,monospace;font-size:1em;line-height:1.2em;margin:1.2em 0px"><code style="font-size:0.85em;font-family:Consolas,Inconsolata,Courier,monospace;margin:0px 0.15em;padding:0px 0.3em;white-space:pre-wrap;border:1px solid rgb(234,234,234);background-color:rgb(248,248,248);border-radius:3px;display:inline;white-space:pre-wrap;overflow:auto;border-radius:3px;border:1px solid rgb(204,204,204);padding:0.5em 0.7em;display:block!important;display:block;overflow-x:auto;padding:0.5em;color:rgb(51,51,51);background:none repeat scroll 0% 0% rgb(248,248,248)">gdal_translate -of NetCDF swe.mdl <a href="http://swe.nc" target="_blank">swe.nc</a>
</code></pre></div></div></blockquote><div><br></div></div></div><div>Can you list the metadata printed out by gdalinfo swe.mdl? What driver is used? </div><div><br></div><div>Does that source file have time-metadata inside it each subdataset or do you need to assign it? </div><div><br></div><div>Generally, the subdatasets are not considered as a time series - they are more like multiple variables for the same observation (whereas a 3rd and higher dimension/s are often unrolled into a multi-attributed 2D layer and the time/z step is stored on each band - it's a bit of a mix/clash of worlds). </div><div><br></div><div>Can you point to and example file somewhere? I imagine you'll need a programmed solution, but it should be pretty easy with R or python or similar. If R is of interest you can try this and take your question to the R community: </div><div><br></div><div>library(raster)</div><div>r <- stack("swe.mdl")</div><div>r <- setZ(r, [whatever the vector of dates should be]) ## pseudocode</div><div>writeRaster(r, "<a href="http://swe.nc" target="_blank">swe.nc</a>")</div><div><br></div><div>That all assumes quite a lot, including available NetCDF versions and packages, required structure in the output, interpretation of the data read in, - so it's just included as an indication how it might be done. </div><div><br></div><div>Cheers, Mike. </div><div> </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div>Thanks<br>Dominik</div></div>
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