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Re: changing resolution from 4km to 36 km grid in ENVI [message #50008 is a reply to message #50006]

Thu, 07 September 2006 12:23

Jean H.
Messages: 472
Registered: July 2006

Senior Member

well, if you really want a 36km resolution, you should multiply by
9.712638661979991160365676420977 ... however it seems much simpler to
input the final pixel size (ie 36000)

In other words, both should work!
Jean

surajchem@hotmail.com wrote:
> hey thanks
> i had one more thing to ask
> this header was for a 4 km file but the pixel size is 3706.51079 m so
> if i want to convert it into 36km, should i multiply pixel size by 9 or
> just imput 36000m.
> thanks
> sunny
>
> Jean H. wrote:
>
>> For the resolution:
>> Basic tools / resize data / then click on "set output dims by pixel size"...
>> For the projection:
>> Map / Convert map projection
>>
>> Jean
>> surajchem@hotmail.com wrote:
>>
>>> hi,
>>> i have a earth data that is a IS projection with 4 km resolution . how
>>> can i convert projection to lambert conformal conic projection with 36
>>> Km resolution using ENVI. actually i pretty new at this.
>>> here is the header of the file
>>> *****************************************************
>>> ENVI
>>> description = {
>>> File Imported into ENVI.}
>>> samples = 10800
>>> lines = 5400
>>> bands = 1
>>> header offset = 0
>>> file type = ENVI Standard
>>> data type = 1
>>> interleave = bsq
>>> sensor type = Unknown
>>> byte order = 0
>>> map info = {Sample IS, 5400.5000, 2700.5000, 0.0000, 0.0000,
>>> 3.7065017090e+003, 3.7065017090e+003, , units=Meters}
>>> projection info = {38, 6371007.2, 0.000000, 0.0, 0.0, 86400, 1, Sample
>>> IS, units=Meters}
>>> wavelength units = Unknown
>>> geo points = {
>>> 1.0000, 2700.0000, 0.00000000, -180.00000000,
>>> 5400.0000, 300.0000, 80.00000000, 0.00000000,
>>> 10500.0000, 2700.0000, 0.00000000, 170.00000000,
>>> 5400.0000, 3600.0000, -30.00000000, 0.00000000}
>>> pixel size = {3.70650171e+003, 3.70650171e+003, units=Meters}
>>> ************************************************************ *******************************
>>> thanks
>>> sunny
>>>
>
>

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[Message index]

		Re: changing resolution from 4km to 36 km grid in ENVI By: Jean H. on Thu, 07 September 2006 13:32
		Re: changing resolution from 4km to 36 km grid in ENVI By: surajchem on Thu, 07 September 2006 13:19
		Re: changing resolution from 4km to 36 km grid in ENVI By: Jean H. on Thu, 07 September 2006 12:23
		Re: changing resolution from 4km to 36 km grid in ENVI By: surajchem on Thu, 07 September 2006 11:35
		Re: changing resolution from 4km to 36 km grid in ENVI By: Jean H. on Wed, 06 September 2006 15:39
		Re: changing resolution from 4km to 36 km grid in ENVI By: surajchem on Fri, 08 September 2006 15:37
		Re: changing resolution from 4km to 36 km grid in ENVI By: surajchem on Fri, 08 September 2006 15:34

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