Re: [datameet] Where can I find land cover data for Kerala from 2008 - 2012?

2023-01-11 Thread Shijith Kunhitty 
Thanks Devdatta, Sarath and Pradeep for responding. 

Managed to find land cover data for Kerala from Bhuvan's WMS service. 
Unfortunately, they only provide png/jpeg images, so had to write code to 
convert those images into the underlying data. Just sharing a link to the 
python 
code  
in case others want it.

(Also I work in the media and these calculations gives me a rough idea of 
landuse/landcover, so that's good enough for me. But if you're in academia, 
i think the actual data may be available for purchase, please do that 
instead.)

The code should give you LULC data at 1:50,000 scale for any area in India 
for 2005-06, 2011-12 or 2015-16 and save it as an netcdf file. 

In the netcdf file, the LULC class will be under the band 'class_new'. What 
each class code represents can be seen from this bhuvan request 
.
 
And for visualising the data, use the 'red_new', 'green_new' and 'blue_new' 
bands. 

Have pasted a few lines of the code below. 

regards, shijith 

# docstring for function
def download_lulc_data(state, bbox, period, save_path):
'''
This function gets 1:50,000 or 25m resolution land use/land cover 
imagery \n
from bhuvan's wms service, estimates the underlying data, and \n
saves that data as a netcdf file.

Parameters:
state -- location of area of interest. Use 2-letter codes like KL for 
Kerala
bbox -- bounding box for area of interest: [min_lon, min_lat, max_lon, 
max_lat] 
period -- 3 options are '2005-06', '2011-12' and '2015-16'
save_path -- where netcdf will be saved 
'''

# example of usage
state = 'KL'
bbox = (76.5368557, 9.5704093, 76.5883541, 9.628581)
period = '2011-12'
save_path = 'kl_2011_12_lulc.nc'
download_lulc_data(state, bbox, period, save_path)




On Friday, 6 January 2023 at 05:55:58 UTC+5:30 Pradeep wrote:
A yet another freely available land cover dataset, for 2020, at 10m, from 
ESA, is WorldCover: viewable at 
https://viewer.esa-worldcover.org/worldcover/, more information at 
https://esa-worldcover.org/.

On Monday, January 2, 2023 at 10:18:37 AM UTC+5:30 Sarath Guttikunda wrote:
One more set of lulc datasets - 1992 to 2020
https://urbanemissions.info/india-air-quality/india-ncap-landcover-classification/
Portal has files cut for Indian city airsheds and the link to global files 
is at the top

With best wishes,
Sarath

--
*Dr. Sarath Guttikunda*

*http://www.urbanemissions.info *


On Sun, Jan 1, 2023 at 9:36 PM Devdatta Tengshe  wrote:
Hi  Shijith,

Your requirement of a 30 m Land Cover from 2008 to 2012 is a difficult ask. 

This is because there wasn't a good multispectral dataset of that vintage 
which was widely available. It is only with the advent of the Sentinel 
System, and advances in storage, that generating a Global, or even county 
wide LULC dataset became reasonable, at such a high resolution. ( A rule of 
thumb is that your source Multispectral data should be 1/3 spatial 
resolution of your required LULC)

Having said that, there are 2 options that you could look into:
1) ESRI has released a Global LULC of 2019-2020 vintage which is freely 
available here: (https://livingatlas.arcgis.com/landcover/)
2) NRSC/Bhuvan has a LULC from 2005 Data, which was made at a 1:50k 
resolution, which is approximately equivalent to 50m resolution. The bad 
news is that this is not directly downloadable, and you will have to write 
to them, and see if they are willing to share the data with you.

A third option is that if you have enough resources, you could download/buy 
data of your study area, and generate the LULC.




Regards,
Devdatta


On Thu, 29 Dec 2022 at 20:33, Shijith Kunhitty  wrote:
So I'm doing some work on Kerala, and wanted to use a land cover dataset 
that covers any year from 2008 to 2012. 

Does anyone have any idea on where I could find such data? Preferably at 
30m resolution?

I was thinking of using one of those global land cover datasets, but they 
don't work for one reason or the other.

I know there is Glance  from 
Boston University that covers 2001-2019, but they've only released data for 
North America so far.

There are some datasets from academics in China -- FROM-GLC 30 
, Globeland30 
 -- but their websites are 
either difficult to navigate or don't work anymore.

There are other datasets from NASA 

 and ESA 
,
 
but at 500m and 300m their spatial resolution isn't high enough.
If anyone could give me any leads, I'd really appreciate it

Thanks,
Shijith


-- 
Datameet is a

Re: [datameet] Where can I find land cover data for Kerala from 2008 - 2012?

2023-01-05 Thread Pradeep 
A yet another freely available land cover dataset, for 2020, at 10m, from 
ESA, is WorldCover: viewable at 
https://viewer.esa-worldcover.org/worldcover/, more information at 
https://esa-worldcover.org/.

On Monday, January 2, 2023 at 10:18:37 AM UTC+5:30 Sarath Guttikunda wrote:

> One more set of lulc datasets - 1992 to 2020
>
> https://urbanemissions.info/india-air-quality/india-ncap-landcover-classification/
> Portal has files cut for Indian city airsheds and the link to global files 
> is at the top
>
> With best wishes,
> Sarath
>
> --
> *Dr. Sarath Guttikunda*
>
> *http://www.urbanemissions.info *
>
>
> On Sun, Jan 1, 2023 at 9:36 PM Devdatta Tengshe  
> wrote:
>
>> Hi  Shijith,
>>
>> Your requirement of a 30 m Land Cover from 2008 to 2012 is a difficult 
>> ask. 
>>
>> This is because there wasn't a good multispectral dataset of that vintage 
>> which was widely available. It is only with the advent of the Sentinel 
>> System, and advances in storage, that generating a Global, or even county 
>> wide LULC dataset became reasonable, at such a high resolution. ( A rule of 
>> thumb is that your source Multispectral data should be 1/3 spatial 
>> resolution of your required LULC)
>>
>> Having said that, there are 2 options that you could look into:
>> 1) ESRI has released a Global LULC of 2019-2020 vintage which is freely 
>> available here: (https://livingatlas.arcgis.com/landcover/)
>> 2) NRSC/Bhuvan has a LULC from 2005 Data, which was made at a 1:50k 
>> resolution, which is approximately equivalent to 50m resolution. The bad 
>> news is that this is not directly downloadable, and you will have to write 
>> to them, and see if they are willing to share the data with you.
>>
>> A third option is that if you have enough resources, you could 
>> download/buy data of your study area, and generate the LULC.
>>
>>
>>
>>
>> Regards,
>> Devdatta
>>
>>
>> On Thu, 29 Dec 2022 at 20:33, Shijith Kunhitty  wrote:
>>
>>> So I'm doing some work on Kerala, and wanted to use a land cover dataset 
>>> that covers any year from 2008 to 2012. 
>>>
>>> Does anyone have any idea on where I could find such data? Preferably at 
>>> 30m resolution?
>>>
>>> I was thinking of using one of those global land cover datasets, but 
>>> they don't work for one reason or the other.
>>>
>>> I know there is Glance  
>>> from 
>>> Boston University that covers 2001-2019, but they've only released data for 
>>> North America so far.
>>>
>>> There are some datasets from academics in China -- FROM-GLC 30 
>>> , Globeland30 
>>>  -- but their websites are 
>>> either difficult to navigate or don't work anymore.
>>>
>>> There are other datasets from NASA 
>>> 
>>>  and ESA 
>>> ,
>>>  
>>> but at 500m and 300m their spatial resolution isn't high enough.
>>> If anyone could give me any leads, I'd really appreciate it
>>>
>>> Thanks,
>>> Shijith
>>>
>>>
>>> -- 
>>> Datameet is a community of Data Science enthusiasts in India. Know more 
>>> about us by visiting http://datameet.org
>>> --- 
>>> You received this message because you are subscribed to the Google 
>>> Groups "datameet" group.
>>> To unsubscribe from this group and stop receiving emails from it, send 
>>> an email to datameet+u...@googlegroups.com.
>>> To view this discussion on the web visit 
>>> https://groups.google.com/d/msgid/datameet/105f2d6b-de1b-4fad-9c44-c1c2a201c357n%40googlegroups.com
>>>  
>>> 
>>> .
>>>
>> -- 
>> Datameet is a community of Data Science enthusiasts in India. Know more 
>> about us by visiting http://datameet.org
>> --- 
>> You received this message because you are subscribed to the Google Groups 
>> "datameet" group.
>> To unsubscribe from this group and stop receiving emails from it, send an 
>> email to datameet+u...@googlegroups.com.
>>
> To view this discussion on the web visit 
>> https://groups.google.com/d/msgid/datameet/CAOQOUMu_yXjMBpjYc-YTjrkh3uf8BqUWXiHGKUkx3%3DkqU0Hbxw%40mail.gmail.com
>>  
>> 
>> .
>>
>

-- 
Datameet is a community of Data Science enthusiasts in India. Know more about 
us by visiting http://datameet.org
--- 
You received this message because you are subscribed to the Google Groups 
"datameet" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to datameet+unsubscr...@googlegroups.com.
To view this discussion on the web visit

Re: [datameet] Where can I find land cover data for Kerala from 2008 - 2012?

2023-01-01 Thread Sarath Guttikunda 
One more set of lulc datasets - 1992 to 2020
https://urbanemissions.info/india-air-quality/india-ncap-landcover-classification/
Portal has files cut for Indian city airsheds and the link to global files
is at the top

With best wishes,
Sarath

--
*Dr. Sarath Guttikunda*

*http://www.urbanemissions.info *


On Sun, Jan 1, 2023 at 9:36 PM Devdatta Tengshe  wrote:

> Hi  Shijith,
>
> Your requirement of a 30 m Land Cover from 2008 to 2012 is a difficult
> ask.
>
> This is because there wasn't a good multispectral dataset of that vintage
> which was widely available. It is only with the advent of the Sentinel
> System, and advances in storage, that generating a Global, or even county
> wide LULC dataset became reasonable, at such a high resolution. ( A rule of
> thumb is that your source Multispectral data should be 1/3 spatial
> resolution of your required LULC)
>
> Having said that, there are 2 options that you could look into:
> 1) ESRI has released a Global LULC of 2019-2020 vintage which is freely
> available here: (https://livingatlas.arcgis.com/landcover/)
> 2) NRSC/Bhuvan has a LULC from 2005 Data, which was made at a 1:50k
> resolution, which is approximately equivalent to 50m resolution. The bad
> news is that this is not directly downloadable, and you will have to write
> to them, and see if they are willing to share the data with you.
>
> A third option is that if you have enough resources, you could
> download/buy data of your study area, and generate the LULC.
>
>
>
>
> Regards,
> Devdatta
>
>
> On Thu, 29 Dec 2022 at 20:33, Shijith Kunhitty 
> wrote:
>
>> So I'm doing some work on Kerala, and wanted to use a land cover dataset
>> that covers any year from 2008 to 2012.
>>
>> Does anyone have any idea on where I could find such data? Preferably at
>> 30m resolution?
>>
>> I was thinking of using one of those global land cover datasets, but they
>> don't work for one reason or the other.
>>
>> I know there is Glance  from
>> Boston University that covers 2001-2019, but they've only released data for
>> North America so far.
>>
>> There are some datasets from academics in China -- FROM-GLC 30
>> , Globeland30
>>  -- but their websites are
>> either difficult to navigate or don't work anymore.
>>
>> There are other datasets from NASA
>> 
>>  and ESA
>> ,
>> but at 500m and 300m their spatial resolution isn't high enough.
>> If anyone could give me any leads, I'd really appreciate it
>>
>> Thanks,
>> Shijith
>>
>>
>> --
>> Datameet is a community of Data Science enthusiasts in India. Know more
>> about us by visiting http://datameet.org
>> ---
>> You received this message because you are subscribed to the Google Groups
>> "datameet" group.
>> To unsubscribe from this group and stop receiving emails from it, send an
>> email to datameet+unsubscr...@googlegroups.com.
>> To view this discussion on the web visit
>> https://groups.google.com/d/msgid/datameet/105f2d6b-de1b-4fad-9c44-c1c2a201c357n%40googlegroups.com
>> 
>> .
>>
> --
> Datameet is a community of Data Science enthusiasts in India. Know more
> about us by visiting http://datameet.org
> ---
> You received this message because you are subscribed to the Google Groups
> "datameet" group.
> To unsubscribe from this group and stop receiving emails from it, send an
> email to datameet+unsubscr...@googlegroups.com.
> To view this discussion on the web visit
> https://groups.google.com/d/msgid/datameet/CAOQOUMu_yXjMBpjYc-YTjrkh3uf8BqUWXiHGKUkx3%3DkqU0Hbxw%40mail.gmail.com
> 
> .
>

-- 
Datameet is a community of Data Science enthusiasts in India. Know more about 
us by visiting http://datameet.org
--- 
You received this message because you are subscribed to the Google Groups 
"datameet" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to datameet+unsubscr...@googlegroups.com.
To view this discussion on the web visit 
https://groups.google.com/d/msgid/datameet/CAAj%2BwWo6x0mNPwyECApVg-eqq22JRK6aULUvR3vmjiirc%2BcTUQ%40mail.gmail.com.

Re: [datameet] Where can I find land cover data for Kerala from 2008 - 2012?

2023-01-01 Thread Devdatta Tengshe 
Hi  Shijith,

Your requirement of a 30 m Land Cover from 2008 to 2012 is a difficult ask.

This is because there wasn't a good multispectral dataset of that vintage
which was widely available. It is only with the advent of the Sentinel
System, and advances in storage, that generating a Global, or even county
wide LULC dataset became reasonable, at such a high resolution. ( A rule of
thumb is that your source Multispectral data should be 1/3 spatial
resolution of your required LULC)

Having said that, there are 2 options that you could look into:
1) ESRI has released a Global LULC of 2019-2020 vintage which is freely
available here: (https://livingatlas.arcgis.com/landcover/)
2) NRSC/Bhuvan has a LULC from 2005 Data, which was made at a 1:50k
resolution, which is approximately equivalent to 50m resolution. The bad
news is that this is not directly downloadable, and you will have to write
to them, and see if they are willing to share the data with you.

A third option is that if you have enough resources, you could download/buy
data of your study area, and generate the LULC.




Regards,
Devdatta


On Thu, 29 Dec 2022 at 20:33, Shijith Kunhitty  wrote:

> So I'm doing some work on Kerala, and wanted to use a land cover dataset
> that covers any year from 2008 to 2012.
>
> Does anyone have any idea on where I could find such data? Preferably at
> 30m resolution?
>
> I was thinking of using one of those global land cover datasets, but they
> don't work for one reason or the other.
>
> I know there is Glance  from
> Boston University that covers 2001-2019, but they've only released data for
> North America so far.
>
> There are some datasets from academics in China -- FROM-GLC 30
> , Globeland30
>  -- but their websites are
> either difficult to navigate or don't work anymore.
>
> There are other datasets from NASA
> 
>  and ESA
> ,
> but at 500m and 300m their spatial resolution isn't high enough.
> If anyone could give me any leads, I'd really appreciate it
>
> Thanks,
> Shijith
>
>
> --
> Datameet is a community of Data Science enthusiasts in India. Know more
> about us by visiting http://datameet.org
> ---
> You received this message because you are subscribed to the Google Groups
> "datameet" group.
> To unsubscribe from this group and stop receiving emails from it, send an
> email to datameet+unsubscr...@googlegroups.com.
> To view this discussion on the web visit
> https://groups.google.com/d/msgid/datameet/105f2d6b-de1b-4fad-9c44-c1c2a201c357n%40googlegroups.com
> 
> .
>

-- 
Datameet is a community of Data Science enthusiasts in India. Know more about 
us by visiting http://datameet.org
--- 
You received this message because you are subscribed to the Google Groups 
"datameet" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to datameet+unsubscr...@googlegroups.com.
To view this discussion on the web visit 
https://groups.google.com/d/msgid/datameet/CAOQOUMu_yXjMBpjYc-YTjrkh3uf8BqUWXiHGKUkx3%3DkqU0Hbxw%40mail.gmail.com.

[datameet] Where can I find land cover data for Kerala from 2008 - 2012?

2022-12-29 Thread Shijith Kunhitty 
So I'm doing some work on Kerala, and wanted to use a land cover dataset 
that covers any year from 2008 to 2012. 

Does anyone have any idea on where I could find such data? Preferably at 
30m resolution?

I was thinking of using one of those global land cover datasets, but they 
don't work for one reason or the other.

I know there is Glance  from 
Boston University that covers 2001-2019, but they've only released data for 
North America so far.

There are some datasets from academics in China -- FROM-GLC 30 
, Globeland30 
 -- but their websites are 
either difficult to navigate or don't work anymore.

There are other datasets from NASA 

 and ESA 
,
 
but at 500m and 300m their spatial resolution isn't high enough.
If anyone could give me any leads, I'd really appreciate it

Thanks,
Shijith


-- 
Datameet is a community of Data Science enthusiasts in India. Know more about 
us by visiting http://datameet.org
--- 
You received this message because you are subscribed to the Google Groups 
"datameet" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to datameet+unsubscr...@googlegroups.com.
To view this discussion on the web visit 
https://groups.google.com/d/msgid/datameet/105f2d6b-de1b-4fad-9c44-c1c2a201c357n%40googlegroups.com.