Although there appears to be an easy way to remove the "Powered by ESRI" graphic in JSON I would like, rather than removing it, to substitute it with a custom PNG.
When I set "Logo": false, in "mapOptions" the Esri logo turns off but if I set the logo to an existing valid PNG, rather than displaying it, the custom graphic is somehow over-ridden and the "Powered by ESRI" graphic is displayed.
How do I replace the default with a custom graphic?
Default graphic:
Setting the logo to a valid PNG has no effect:
Setting the logo to false works!
Result:
Best Answer
The "logo" option is documented as being a Boolean value that defaults to true. So if you put false, it won't show it; if you enter any value (or leave it off so it defaults to true), it will show their logo. (This is because JavaScript interprets any non-null value as true.) So you're left with the option to set it to false, and float your own logo over the map.