Recipe: SelectBands

created by LociOiling

Profile

• Name: SelectBands
• ID: 104235
• Shared with: Public
• Parent: None
• Children: None
• Created on: December 19, 2020 at 20:58 PM UTC
• Updated on: December 19, 2020 at 20:58 PM UTC
• Description:

  Demonstrate dialog.SelectBands

Code

bands = dialog.SelectBands ()

print ( #bands .. " bands selected" )

bndlst = ""
for ii = 1, #bands do
    bndlst = bndlst .. bands [ ii ]
    if ii < #bands then 
        bndlst = bndlst .. ","
    end
end

print ( "bands = \"" .. bndlst .. "\"" )

Comments

[LociOiling]

This recipe demonstrates dialog.SelectBands, a new call which replaces the "user pick" option found in GUI recipes.

As with dialog.SelectSegments, SelectBands has some confusing highlighting.

The first band selected is not highlighted initially.

When a second band is selected, the highlighting depends on whether the band index is greater than or lesser than the band index of the first band selected.

When the index of the second band is lower, the second band is highlighted.

When the index of the second band is higher, the first band selected is highlighted. Clicking the same second band again clears the highlighting of the first band.

As with SelectSegments, the correct bands seem to be selected by SelectBands, but the visual presentation is confusing.

With SelectBands, the bands selected can be seen (when highlighted) regardless of the coloring option selected, which is not the case with SelectSegments.