GeoTiff en un fichier Shapefile

Question

<\/HEAD>Bonjour, <\/P> J'ai un fichier GeoTiff à 4 bandes qui représente le degré de végétation dans une zone, avec une taille de cellule de 30x30. Je veux le convertir en un fichier shapefile afin de pouvoir l'ajouter à un autre shapefile (pour pouvoir exécuter un OLS). <\/P> <\/P> Mais je ne sais pas comment convertir un tif en shp. J'ai essayé de lire des forums en ligne mais je reste bloqué. Toute aide ou conseil serait apprécié. <\/P><\/BODY><\/HTML>

RebeccaStrauch__GISP · Answer

I converted your discussion to a question and moved it to Imagery and Remote Sensing‌

Both might get you more responses.  Also tagging Managing Data‌

I agree with Dan that simplifying might be in order, but converting to a file GDB polygon layer before a shape file.  It might offer more flexibility and options.  Once you have it ready, then export to a shape.  Shapes may have other restrictions.

As to converting, How Polygon To Raster works—Help | ArcGIS Desktop   might be a good starting point.

DanPatterson_Retired · Answer

That will never convert to a shapefile because of the complexity of the image. It needs to be far more generalized and cleaned up.  Every speckle on the image that is slightly different from its neighbor will attempt to become a polygon. That image need further reclassification to reduce the number of areas to a manageable size.