[ncl-talk] CALIPSO L2 vdata

[Wei Huang]

You definitely need to edit the vdata file and then save as same format as
the example to a file named as lidar_altitude.txt.

Wei

================================================
1850 Table Mesa Dr.
Boulder, CO 80307
Phone: 303-497-8924

On Wed, Dec 3, 2014 at 8:58 PM, Sunmin Park <mireiyue at gmail.com> wrote:

> Thank you Wei I got the vdata. However, the example says I need edit the
> vdata and according to the script (calypso_3.ncl) at
> http://www.ncl.ucar.edu/Applications/calipso.shtml.
>
> Should I modify the vdata as same format as the example then save the file
> name as lidar_altitude.txt?
> I did used vdata instead of lidar_altitude.txt but It didn’t work.
>
> Thank you in advance
> Sun-
>
>
> On Dec 3, 2014, at 2:49 PM, Wei Huang <huangwei at ucar.edu> wrote:
>
> Using command:
> hdp dumpvd CAL_LID_L2_05kmAPro-Prov-V3-02.2013-01-31T23-42-01ZN_Subset.hdf
> > vdata
>
> You'll get the vdata.
> Attached is what I got by using this command.
>
> Then check vdata 0. There you will get your LIDAR altitude.
>
> Wei
>
>
> ================================================
> 1850 Table Mesa Dr.
> Boulder, CO 80307
> Phone: 303-497-8924
>
> On Wed, Dec 3, 2014 at 3:26 PM, Sunmin Park <mireiyue at gmail.com> wrote:
>
>> Dear NCL users
>>
>> I have CALIPSO L2 data set and used hdp dumpvd to obtain data. I followed
>> the example at NCL website (
>> http://www.ncl.ucar.edu/Applications/calipso.shtml).
>>
>> hdp
>> dumpvd CAL_LID_L2_05kmAPro-Prov-V3-02.2013-01-31T23-42-01ZN_Subset.hdf >
>> vdata
>>
>> But still I cannot get the lidar_altitude.txt file in the example 3 at
>> http://www.ncl.ucar.edu/Applications/calipso.shtml. Should I modify it
>> myself in vdata?
>>
>> How I can get the altitude from CALIPSO L2 file (Attached files: CALIPSO
>> L2 and vdata)?
>>
>> ANY helps and comments will be appreciated.
>>
>> Thank you in advance
>> Sun-
>>
>>
>>
>>
>> On Nov 25, 2014, at 10:45 AM, Wei Huang <huangwei at ucar.edu> wrote:
>>
>> Sun,
>>
>> I have checked the file (which you put on our ftp site).
>> There are nothing related to "liar altitude".
>>
>> You may try NCL script:
>>  flnm = "CAL_LID_L2_05kmAPro-Prov-V3-02.2012-03-22T10-02-21ZD.hdf"
>>  f = addfile(flnm, "r")
>>
>>  print(f)
>>
>> or: ncl_filedump filename
>> to see all the variables.
>>
>> I have also checked with HDFView, which do not have such variable neither.
>>
>> If you can tell us more about what you want to do with this dataset,
>> We'd like to help you.
>>
>>
>> Wei
>>
>>
>> ================================================
>> 1850 Table Mesa Dr.
>> Boulder, CO 80307
>> Phone: 303-497-8924
>>
>> On Mon, Nov 24, 2014 at 12:29 PM, Sunmin Park <mireiyue at gmail.com> wrote:
>>
>>> Hi, Wei
>>>
>>> I thought I figured it out however it is not working. I created text
>>> file for liar_altitude.txt using vi (got data from
>>> https://www.ncl.ucar.edu/Applications/calipso.shtml, calipso_3,ncl).
>>>
>>> Should I use “hdp dumpvd
>>> CALI_LID_L2_05kmAPro-Prov-V3-01.2009-07-10T14-32-05ZD.hdf_Sunset.hdf>vdata”
>>> to get the liar altitude? As I said in the previous email I tried but it
>>> doesn’t find the commend “hep”.
>>>
>>> Could you please help me to get data from CALIPSO L2?
>>>
>>> Thank you
>>> Sun-
>>>
>>> On Nov 24, 2014, at 9:24 AM, Wei Huang <huangwei at ucar.edu> wrote:
>>>
>>> Sun-.
>>>
>>> NCL can handle most of HDF files.
>>> Try ncl_filedump your-filename.
>>>
>>> Wei
>>>
>>> ================================================
>>> 1850 Table Mesa Dr.
>>> Boulder, CO 80307
>>> Phone: 303-497-8924
>>>
>>> On Mon, Nov 24, 2014 at 10:16 AM, Sunmin Park <mireiyue at gmail.com>
>>> wrote:
>>>
>>>> Dear NCL users,
>>>>
>>>> I am trying to read CALIPSO L2 profile data. According to the
>>>> Application examples, NCL doesn’t not read HDF data therefore, we need to
>>>> use hep dumped to get the liar altitude. However, when I tried and got
>>>> "hdp: Command not found.” (I installed HDF5 because it didn’t work before
>>>> so I looked for hdf which I didn’t have).
>>>>
>>>> Could you please help me how I can get data from CALIPSO?
>>>> I appreciate any comments and helps.
>>>>
>>>> Best,
>>>> Sun-
>>>> _______________________________________________
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>>>>
>>>
>>>
>>>
>>
>>
>>
> <vdata.wei>
>
>
>
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