# Relative variation factor

Detecting changes that happened in the field during the last one-two weeks or one-two months or even a couple of years helps to get insights into crop development.

Relative variation factor or Relative Variation Index can be used to:

* locate spots with similar performance across 5-10-20 years and place the trials in areas with similar conditions to reduce the probability of mistake
* track the changes during the season and evaluate crop performance during the growth
* recognize the damaged areas after a weather disaster or a disease or a pest attack and calculate damaged areas
* detect the difference between the last two images and control the crop performance.

<figure><img src="https://lh4.googleusercontent.com/J0kjeFrPPTC7MB9PFTzMrpjmVVwkcdu7k5jHsoZW-siW6uK1j9_ZCCrhdtHBgNkyNeUEHCvUvdF8O2_Ph9NBuSA19_HCeH8YAGCOcbCNxoDMoH8nPeEtX9gMrStPoCeoPob4y7Uo" alt=""><figcaption></figcaption></figure>

GeoPard’s Relative Variation Index (RVI) covers all those cases and many others. RVI will provide more insights into crop development when used together in combination with in-season and historical management zones.

Simply choose your field and satellite images to track the changes across them and get insights about every spot in your field.

<figure><img src="https://lh6.googleusercontent.com/KZ55fxILS4HGrim6yUldiiSdiymt9Qwjajg7jGQiUO4PUYZNNuOU1TNEtPVo1Q4fMz5WYfI8U6gDvveCCgxfte_ECXHpiZ068ynSWlZkz6igvFc0xDYrDoW-k3zbO5LmSetG_QDB" alt=""><figcaption></figcaption></figure>