# What should be the list of bands with index equation to calculate water stress index for agricultural land using multi spectral sensor ?

**URL:** <https://community.pix4d.com/t/what-should-be-the-list-of-bands-with-index-equation-to-calculate-water-stress-index-for-agricultural-land-using-multi-spectral-sensor/5302>\
**Category:** PIX4Dmapper Questions/Troubleshooting\
**Created:** [July 1, 2016, 12:11pm UTC](https://community.pix4d.com/t/what-should-be-the-list-of-bands-with-index-equation-to-calculate-water-stress-index-for-agricultural-land-using-multi-spectral-sensor/5302 "2016-07-01T12:11:22Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![Bikram\_Gangwar](https://avatars.discourse-cdn.com/v4/letter/b/9fc29f/32.png) [@Bikram\_Gangwar](https://community.pix4d.com/u/Bikram_Gangwar)\
**Post date:** [July 1, 2016, 12:11pm UTC](https://community.pix4d.com/t/what-should-be-the-list-of-bands-with-index-equation-to-calculate-water-stress-index-for-agricultural-land-using-multi-spectral-sensor/5302/1 "2016-07-01T12:11:22Z")

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Hi,&nbsp;  
I am having a sensor with 5 bands ( Red, Green, Blue, Red edge, and NIR ). I want to calculate the water stress index using only these 5 bands. Is it possible to calculate the same, and if yes please provide me with the formula to find.

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**Author:** ![Marc\_Desgroseilliers](https://sea2.discourse-cdn.com/pix4d/user_avatar/community.pix4d.com/marc_desgroseilliers/32/187_2.png) [@Marc\_Desgroseilliers](https://community.pix4d.com/u/Marc_Desgroseilliers)\
**Post date:** [October 25, 2016, 2:48pm UTC](https://community.pix4d.com/t/what-should-be-the-list-of-bands-with-index-equation-to-calculate-water-stress-index-for-agricultural-land-using-multi-spectral-sensor/5302/2 "2016-10-25T14:48:07Z")

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Dear Bikram,&nbsp;

The CWSI typically requires thermal data, which is not the data that you mention. You can use the Formula Editor to create new indices with the data that you can collect, see

[https://support.pix4d.com/hc/en-us/articles/202560489-How-to-work-with-Indices-Formulas-in-the-Index-Calculator](https://support.pix4d.com/hc/en-us/articles/202560489-How-to-work-with-Indices-Formulas-in-the-Index-Calculator)

Best regards,

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**Author:** ![Alvaro\_Cortes](https://avatars.discourse-cdn.com/v4/letter/a/53a042/32.png) [@Alvaro\_Cortes](https://community.pix4d.com/u/Alvaro_Cortes)\
**Post date:** [July 25, 2017, 4:10pm UTC](https://community.pix4d.com/t/what-should-be-the-list-of-bands-with-index-equation-to-calculate-water-stress-index-for-agricultural-land-using-multi-spectral-sensor/5302/3 "2017-07-25T16:10:57Z")

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Hi,

We have a sensor and bands thermal for pix4d, but calculate the index CWSI i cant, pix4d has one band alone, the thermal\_ir, which i calculate this index?

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Thanks

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**Author:** ![Pierangelo\_Rothenbuhler](https://sea2.discourse-cdn.com/pix4d/user_avatar/community.pix4d.com/pierangelo_rothenbuhler/32/2439_2.png) [@Pierangelo\_Rothenbuhler](https://community.pix4d.com/u/Pierangelo_Rothenbuhler)\
**Post date:** [August 2, 2017, 1:44pm UTC](https://community.pix4d.com/t/what-should-be-the-list-of-bands-with-index-equation-to-calculate-water-stress-index-for-agricultural-land-using-multi-spectral-sensor/5302/4 "2017-08-02T13:44:35Z")

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Hi Alvaro, thanks for creating a new post based on your comment. I answered you there:&nbsp;[https://community.pix4d.com/t/3910](https://community.pix4d.com/t/3910)