Preview app does not support datasets where min == max

Activating the layer does not work. I get

Error: noUiSlider (12.0.0): 'range' 'min' and 'max' cannot be equal.

in the JS console. Seems like we will have to catch this case…

[mrpgraae]

See this issue https://github.com/leongersen/noUiSlider/issues/676 for the upstream maintainers stance on 1.

[dionhaefner]

Simplest implementation should be something like

if (metadata.range[0] == metadata.range[1]) {
 singlebandSlider.noUiSlider.updateOptions({ 
     range: { 
         min: metadata.range[0] - 1, 
         max: metadata.range[1] + 1,
     },
     behaviour: "fixed", 
 }); 
}