Items listed in this specification as metadata should be provided in the geotiff file using the nonstandard tag 42112 which identifies GDAL metadata. The data associated with this tag should be in XML format where the root element is named GDALMetadata. GDALMetadata may have any number of child elements named Item. Each Item element should have an attribute called "name" identifying the name of the metadata item. The content of the Item element should be the data. Here is part of the output of the tiffinfo utility for a conforming file:
Tag 42112: <GDALMetadata> <Item name="acquisitionEndDate">2016-09-08T15:53:00+05:00</Item> <Item name="acquisitionStartDate">2016-09-08T15:56:00+05:00</Item> <Item name="boundaryId">5ccaf27593504784b1a80ea7b20815be</Item> <Item name="brandId">53f3831b2ca747f6a805c6d0712fcf13</Item> <Item name="fieldId">a0f9c35f105f4fbca63c51b6df37fc20</Item> <Item name="isCalibrated">True</Item> <Item name="sourceId">5916fc4b51aa44e298afca7ff6bef1d4</Item> </GDALMetadata>
Climate FieldView does not support compressed geotiff files at this time.
Any pixel for which no valid data is available must be set to the no data value indicated by the TIFFTAG_GDAL_NODATA tag (code 42113). This includes both no data values within the field boundary and any areas outside the field boundary that do not contain valid data. Note that this does not mean you must clip your images to field boundaries, only that if you do clip to field boundaries, please use the no data value to fill areas outside the boundaries.