Calculating NDVI using QGIS and Landsat 8 Images

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  • Опубликовано: 23 янв 2025

Комментарии • 63

  • @Gowahhhh
    @Gowahhhh 3 года назад +1

    The voice behind the camera👌 thankyou sir much needed

  • @tommy93hun
    @tommy93hun 3 года назад +12

    If you want to calculate NDVI then pick sentinel 2 instead. It's also free but it got better spatial resolution (10 m) compared to landsat 8.
    Anyway, neat little video.

    • @geodeltalabs
      @geodeltalabs  3 года назад +2

      Thanks for your comment :)

    • @winleydurham962
      @winleydurham962 3 года назад +2

      Similarly, if you're in the US, there's NAIP free 4 band imagery which is 1m I believe

  • @amitnevase8110
    @amitnevase8110 3 года назад +5

    Your tutorials are very neat and easy to understand and follow through. I am a marine biologist and new to GIS, remote sensing and spatial analysis. I see most of your videos are taking land-based examples into consideration, would it be possible for you to include a couple of examples that would show include marine/sea related examples such as showing healthy/unhealthy coral reef areas or seagrass meadows using suitable methods? Thank you and your whole team. Please keep such videos coming.

  • @SayantanChatterjee-g1d
    @SayantanChatterjee-g1d 11 месяцев назад

    You made it so easy! Thank you for this!

  • @kkethusha7666
    @kkethusha7666 3 года назад

    Thank You My teacher🙂. Really well. Actually, your tutorials improve the GIS knowledge. Stay safe & God bless you sir🙂🙂

    • @geodeltalabs
      @geodeltalabs  3 года назад +3

      You are welcome. Your previous question on NDVI is what made me realize that I haven't done a tutorial on NDVI, so here you go. Thanks for your inputs.

    • @kkethusha7666
      @kkethusha7666 3 года назад +1

      Glad to hear this 🙂

  • @REAPER7777
    @REAPER7777 3 года назад +3

    super!! Keep them coming please.

  • @sadunika5036
    @sadunika5036 8 месяцев назад

    Very clear and detailed.thank you very much

  • @settydip3058
    @settydip3058 Год назад +1

    How to calculate the area of each class?

  • @Vikas20a
    @Vikas20a 3 года назад +3

    thanks for the tutorial, i have a question that can we calculate the area of water bodies from this map suppose I want to do a comparison of area of water bodies between 2000 and 2020.

  • @shekharsaini7872
    @shekharsaini7872 3 года назад +1

    is there any need for atmospheric correction before calculation NDVI in QGIS? Landsat level-1 is not atmospherically corrected data?

  • @hemantchoudhary7071
    @hemantchoudhary7071 2 месяца назад

    How can we merge two different but near by location's landsat images in qgis ? please can you help me with this ( for example: one you have downloaded in this video and it contains whole folder of different bands but of one image, but if you are downloading another folder of same satellite but of near by location ... can we add it together like merge them with each other without overlapping it and if we can then please do tell me on this.....) and do tell the conditions too like we can or cannot merge of two different time images together? like different days and all?

  • @MrArunavadatta
    @MrArunavadatta 2 года назад

    Elegant tutorials..really nice

  • @RamyaNarasimhan-sq6bf
    @RamyaNarasimhan-sq6bf 9 месяцев назад

    when band 4 and 5 are dragged and dropped, am unable to see the map on screen, kindly let me know the reason

  • @SH-gz4xk
    @SH-gz4xk 7 месяцев назад

    Thanks, why we have to changes the numbers on the classification?

  • @marnoherbst4136
    @marnoherbst4136 Год назад

    Hi, I want to set up a database of NDVI values over a specific period for crops. The areas are thus very small. I am not sure how to go about this. Is there a way you can assist on that?

  • @bablusamanta8609
    @bablusamanta8609 2 месяца назад

    How to make NDVI in Landsat 1 MSS image in delta areas?

  • @garciaeunice5123
    @garciaeunice5123 Год назад

    Hi, is there a process for accuracy assessment of NDVI?

  • @geo15304
    @geo15304 10 месяцев назад

    I appreciate this information. In other videos you began first by applying radiometric corrections and calculating surface reflectance. Is it necessary to do these preprocessings before calculating the NDVI? Thank you.

  • @Stichwithanuja
    @Stichwithanuja Год назад

    It is not showing the coordinates of NDVI while making the layout😢😢

  • @preetibhatnagar2328
    @preetibhatnagar2328 2 года назад

    I followed exactly the same steps, but tried to run it on arcgis (arcmap), but unfortunately it shows me the ndvi from 0-1. which is clearly not correct. can you tell me what am i messing up?

  • @johndaniel5581
    @johndaniel5581 3 года назад

    Unable to download the Landsat Collection 2 Level-2 Product Bundle !!!

  • @ucatpham8297
    @ucatpham8297 Год назад

    Please suggest a video to use NDVI raster for LULC classification of Landsat 4-5?
    Many thanks

  • @SiccaXIII
    @SiccaXIII Год назад

    Hello, how do I get the area of a specific NDVI range like area difference between vegetation and non-vegetated areas? Thank you!

  • @priscamwango8677
    @priscamwango8677 9 месяцев назад

    straight forward after going through thousands of videos in google search engine

  • @ibtissemlo3349
    @ibtissemlo3349 9 месяцев назад

    i dont get -1 +1 when i do the ndvi why is that

  • @jennifermaisraphael8387
    @jennifermaisraphael8387 Год назад

    Good Presentation. Learning a lot. How do you cater for non-vegetation land cover like built-up areas? From the NDVI layer that was produced and with the pseudocoloring given, it is easy to incorrectly interpret all light areas as unhealthy vegetation.

  • @kicivil8173
    @kicivil8173 2 года назад

    How to find out area of this Low and High NDVI area

  • @rezkyramadhani5877
    @rezkyramadhani5877 2 года назад

    how to calculate NDVI from landsat collection 2 level 2 data?

  • @zachsilvia
    @zachsilvia 2 года назад +1

    Hi. Thank you for this very clear tutorial. Is there a way to produce statistics based on the classification output?

    • @arnaudlrc
      @arnaudlrc 2 года назад +3

      sure, check out "zonal statistics". you can type it in the little search box in the corner down left. Then a dialog will come up asking you what raster you wanna calculate statistics from. And if you want to calculate the statistics of a particular area, you have to draw a polygon of that area beforehand

    • @geodeltalabs
      @geodeltalabs  2 года назад +2

      Correct! :)

    • @zachsilvia
      @zachsilvia 2 года назад

      @@arnaudlrc Thanks!

    • @zachsilvia
      @zachsilvia 2 года назад

      @@geodeltalabs Thanks!

  • @mowcloud
    @mowcloud 11 месяцев назад

    OMG i need to see this for the Factor C, of RUSLE equation, by the way, can you do re RULSE method in QGIS?

  • @pradeepkumardash2363
    @pradeepkumardash2363 2 года назад

    Please make a video how to calculate above ground biomass from NDVI data.

  • @quentingerona8182
    @quentingerona8182 2 года назад

    How do you make the boundary.kml file ? I'm blocked to this step

    • @geodeltalabs
      @geodeltalabs  2 года назад

      You can just create one by yourself using the 'add polygon' tool of Google Earth Pro

  • @masheerfishing
    @masheerfishing 3 года назад

    Can you make a tutorial on indices based built up index??

  • @wathsalarasanjali3440
    @wathsalarasanjali3440 Год назад

    Thank you ❤️

  • @mohammadbelalalzoubi8102
    @mohammadbelalalzoubi8102 3 года назад +1

    Beautiful

  • @cursedcat281
    @cursedcat281 2 года назад

    Thank you so much.

  • @habeebalaran
    @habeebalaran 3 года назад

    Thank you the entire GEODELTA team, pls I do I use vertices to join points. I don't mean points to line. Points to line will only join for example A to B or C to D. but incase of vertices is connecting more than one points. E.g. A is connecting D and E in case of geodetic network. Using arcgis Thanks

  • @pantheraigni
    @pantheraigni Год назад

    Muchas gracias Crack

  • @KehindeEzekielOlasuyi
    @KehindeEzekielOlasuyi Год назад

    you used (5 -4)/(5+4), why? I thought it should be (4-3)/ (4+3) for the NDVI value

    • @brendanpeck6121
      @brendanpeck6121 Год назад

      Your formula is true for the Landsat 7 bands. However, for the Landsat 8, they have an additional band as number 1. So band 4 in Landsat 7 is like band 5 in Landsat 8.

  • @hjkopbfcfdfygf
    @hjkopbfcfdfygf 2 года назад

    thank you very much

  • @bernotacademyofsciences7838
    @bernotacademyofsciences7838 3 года назад +1

    Awsome

  • @mimininnette631
    @mimininnette631 2 года назад

    do for us metashape

    • @geodeltalabs
      @geodeltalabs  2 года назад

      could you elaborate a bit more? :)