On Nov 27, 2018, 10:59 AM, at 10:59 AM, Arun Govind <[email protected]> wrote:
>Hi,
>I need some help and inputs with serving imagery using GeoServer as I'm
>new to it. Thanks in advance.
>
>I downloaded 32 bit float TIFF images from Sentinel Hub to serve with
>GeoServer to a OpenLayers and JavaScript web map frontend.
>https://sentinelhub-py.readthedocs.io/en/latest/examples.html
>
>Tiff images are:
>multi-band (3 bands) - true color, false color
>single-band (1 band) - NDVI, NDWI
>
>For some reason, by default QGIS automatically assigns an alpha band
>(eventhough there's none) and sets transparency based on it and don't
>display and I had to manually set transparency as "none" or "no" to see
>the image. ArcMap correctly loaded the images by default.
>
>My questions:
>1) Does GeoServer support 32-bit float images and correctly display
>them?
>
>2) What is the recommended process to stylize or color single-band
>greyscale images? E.g. NDVI values ranging from -1 to +1? Can I use
>.clr, .sld files?
>
>3) Do I need any extra plugins for GeoServer?
>
>4) I will have several hundred small images for multiple dates. Is it
>easier if I make a mosaic and add images to it and just style the
>mosaic once rather than style each small image? What's the best way to
>do this?
>
>5) The web map is to do both visual (colors) and numerical info (pixel
>values on click). So is it easier if images are imported into PostGIS
>and then brought to GeoServer?
>
>Cheers,
>Arun
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