> For the complete documentation index, see [llms.txt](https://docs.geopard.tech/geopard-tutorials/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.geopard.tech/geopard-tutorials/svn/hitri-gis-namigi/qgis-izracunaj-ndvi-za-dronsko-geotiff-datoteko.md).

# QGIS: izračunaj NDVI za dronsko GeoTIFF datoteko

Včasih morate izračunati povprečni NDVI za neki poligon znotraj polja. V programu QGIS lahko naredite naslednje.<br>

<figure><img src="https://lh4.googleusercontent.com/fkankewAK-NkgRxklkXsY_17vIFeDwTjuCNNPvHPX2yzdAQsAx3sWvbQpSnnB8AxG85zYHEyNreHFAUnuD1SzaOZ5gkw-6JZ4X1xAkLs_f7ZNqGogyXOfABMxIBg4LQiO1yg_-OX4J5FtUoQlmPtAw" alt=""><figcaption></figcaption></figure>

#### 1 - Prikažite začetni Drone NDVI GeoTIFF

<figure><img src="https://lh6.googleusercontent.com/TnFIzVA_U7L1Z4oMmnOAKZHZQBQ7-1-IqrPAidFzzh7SSF-9KWLAf5xDdwpifj3Ff847fN-wS2tU6jzWcm4qUa4dNkbX287BNpakmOHDqGvsrBPiCkICYpxN_qJiJ2EBkKcJjauq02KAAAyKLB7Gbg" alt=""><figcaption></figcaption></figure>

#### 2 - Ustvarite novo plast

<figure><img src="https://lh6.googleusercontent.com/XjSDzTuLAggVtP0SizpQMRjG6jBsUQVS2MKFxbauRFUD_YOq2KsbXo6Ov3sTiO2r158q9qyXGQyiSiC3IbMrx-SboOrVfEs5bvgYoVIXcqyIQfffKeoKdCDRhQDkx65xaPTpKRrBhuTJDXPJlpQfZA" alt=""><figcaption></figcaption></figure>

#### 3 - Nastavite ime plasti in tip geometrije ter pritisnite OK

<figure><img src="https://lh5.googleusercontent.com/H1cGGtrsYwaHw9RCYIU-AJ-vGm7c8Ct5tC5HVnVx96Ev-nYa3gleJ6joKrX-6zfIKMF50eBmI2MPFJ4FEmam9gvjKFq-ovVxhw7FhecUnH6Xf1OQ2MA87t-8H_km6cpYEySZqQW_DZV79YLClPDPeg" alt=""><figcaption></figcaption></figure>

#### 4 - Izberite plast v plošči Plasti

1. Izberite »Preklopi urejanje« (1)
2. Izberite »Dodaj poligonski element« (2)

#### 5 - Narišite poligon. Za zaključek risanja pritisnite desni gumb miške in v pojavnem oknu nastavite »id«.

Zaključite plast tako, da znova pritisnete »Preklopi urejanje« in pritisnete »Shrani«.

<figure><img src="https://lh3.googleusercontent.com/3qiSZYB3e8c_froqsv59x8tU9mMKIh3cvC6Tlv9xyZDZQc6d5AGZXylBVGBvnypyDVXJvbUsqNVe5p8aF8mS0VnSCPPTwqsIvAVYmnZYAlGgBnVu5od_5C1oU3IwDwpUpcJhWpbDrMzI46UgaeLtTg" alt=""><figcaption></figcaption></figure>

#### 6 - V plošči »Orodjarna za obdelavo« izberite prostorske statistike.

<figure><img src="https://lh3.googleusercontent.com/qdPIGWoz8W2id9mXwjo-7AnbX8RWSpMnEdhFtIzR4fq07Po3Jg2Wmn0-4Ucgihk_04H2VJsQraYPSE8f6MHB0cjtMD2VAsMe8ILf6vu-gtCXFor7pGVg-1-vus8OXx2MyY2Ogb4LVMxcpB7Hkp5sHw" alt=""><figcaption></figcaption></figure>

#### 7 - Izberite rastrsko plast (1),

Izberite poligonsko plast (2),

Pritisnite »Zaženi« (3).

<figure><img src="https://lh3.googleusercontent.com/htEYAd45WO6Rcw8rHMQ4W7rO4CdjsyxiHP_7Wb2gUan1Dw_szsi43ePRS6x8lHhAA8JeklNUfPEm3Xh6nXnoDJaiXq3eMGwqSOC2Yb-qvnUhOIInsMhCe_ImYHEv7MS60ZkXYoaXkJiKBIOTUskbTQ" alt=""><figcaption></figcaption></figure>

#### 8 - Izberite plast v plošči Plasti in pritisnite desni gumb miške; v kontekstnem meniju izberite Odpri tabelo atributov.

<figure><img src="https://lh3.googleusercontent.com/Oc1SLXwTAYBzZUrFq3TOAnF2p9UROQ28Cv6wv3XXhLkS5LGYRNoZ-JD_HIjDt-9FEiAzQLXjehiIyjZielJtB6-F0ohTMz3gTbsoZ02vanuuv37voF72i1h3p8YQBuhgfpt6hCcTguhM3-AujNSV_A" alt=""><figcaption></figcaption></figure>

#### 9 - Izračunana statistika bo prikazana v tabeli.<br>


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