On Wed, 1 Aug 2018 at 11:13, Shawn Carter <shawn.m.car...@gmail.com> wrote:
>
> Sure.  https://1drv.ms/f/s!AhIPPYddAyx1gdsPGUUrwQMwtCGqOA
>
> In that web share folder you'll find a GeoTiff with values ranging from -1 to 
> 1.  The second file is a style file with three classes.  If you remove the 
> middle class, my QGIS will quit displaying any values...add a third class it 
> works.
>

Thanks - fixed.

Nyall

> On Tue, Jul 31, 2018 at 4:31 PM Nyall Dawson <nyall.daw...@gmail.com> wrote:
>>
>> On Wed, 1 Aug 2018 at 02:21, Shawn Carter <shawn.m.car...@gmail.com> wrote:
>> >
>> > One of the more common tasks I use QGIS for is creating flood inundation 
>> > and water extent maps using a variety of remotely sensed data.  My general 
>> > method for visualizing the data was to create a discrete singlelayer 
>> > pseudocolor ramp  with two classes.  For example, if using NDWI data I 
>> > would set values of [-1, 0.1] as fully transparent and [0.1, 1] as opaque 
>> > shade of blue.  On Ubuntu 18.04, QGIS 3.2 I've noticed that if I only use 
>> > two classes, the data isn't displayed.  If I add a third class it will be 
>> > displayed.  Is this a problem and should I submit a bug report?
>>
>> Could you share a sample dataset and project showing this issue?
>>
>> Nyall
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