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Re: HDF_Browser Woes [message #53800 is a reply to message #53798]

Thu, 03 May 2007 09:21

Benjamin Hornberger is currently offline

Benjamin Hornberger
Messages: 258
Registered: March 2004

Senior Member

David Fanning wrote:
> Folks,
>
> Does anyone have the foggiest idea of how HDF_BROWSER works?
> I'm trying to figure out what is in an unknown HDF file.
> When I select the READ button, something is returned,
> but I can make no sense of it whatsoever. Help (or suggestions
> for using something OTHER than HDF_BROWER) is appreciated.

I can tell you how (little) I used hdf_read(). I believe hdf_browser()
can produce a template to subsequently open several files of the same
type / structure with hdf_read() without going through what I describe
below each time.

I open hdf_read() and pick a file. The text field on the upper left
tells you what's in the file (attributes, datasets etc.), which you can
select by doubleclicking. You can also use the dropdown list to show
only a selection. If you select an attribute, dataset or whatever, you
can preview it in the window on the upper right. The preview is kind of
limited, however. For example, byte/char arrays representing strings are
plotted (funny, isn't it?) in one netCDF file I am testing right now
(yes, it also supports netCDF).

In the lower half of the window, once you have selected an attribute /
dataset / whatever, you can choose to extract (read) it and give a name.
Once you click OK, the return value of hdf_read() is a structure with
the fields containing the stuff you have extracted (read). For example,
if you do

data=hdf_read(file)

and then extract attribute 1 as 'a' and dataset 2 as 'b', in the end
you'll have a structure 'data' with fields 'a' and 'b'.

Hope that helps,
Benjamin

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[Message index]

		Re: HDF_Browser Woes By: David Fanning on Thu, 03 May 2007 10:21
		Re: HDF_Browser Woes By: Richard Edgar on Thu, 03 May 2007 10:08
		Re: HDF_Browser Woes By: David Fanning on Thu, 03 May 2007 09:49
		Re: HDF_Browser Woes By: Benjamin Hornberger on Thu, 03 May 2007 09:21
		Re: HDF_Browser Woes By: MarioIncandenza on Thu, 03 May 2007 09:12
		Re: HDF_Browser Woes By: Richard Edgar on Thu, 03 May 2007 10:58

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