Print biome, humidity, temperature, altitude options

[paanrama]

Can be posible add the next options?
--biome: print only biome data (biome colors must be added to colors.txt)
--humidity: print only humidity data (humidity range colors must be added to colors.txt)
--temperature: print only temperature data (temperature range colors must be added to colors.txt)
--altitude: print only altitude data (altitude range colors must be added to colors.txt)

It can be very usefull while testing configuration changes.

[sfan5]

--biome: print only biome data (biome colors must be added to colors.txt)
--humidity: print only humidity data (humidity range colors must be added to colors.txt)
--temperature: print only temperature data (temperature range colors must be added to colors.txt)

These are provided by the mapgen on demand and not stored in the map files.
Unless each and every mapgen is reimplemented (at least partially), minetestmapper won't be able to reproduce these values.

--altitude: print only altitude data (altitude range colors must be added to colors.txt)

Definitely possible.

[paanrama]

--biome: print only biome data (biome colors must be added to colors.txt)
--humidity: print only humidity data (humidity range colors must be added to colors.txt)
--temperature: print only temperature data (temperature range colors must be added to colors.txt)

These are provided by the mapgen on demand and not stored in the map files.

I am sad to hear that.😭

[paramat]

To get a biome map you could manually create and use an alternative colors.txt file where nodes of each biome are colour-coded and distinguishable. That's the only way.
Temperature and humidity are impossible to know from the map file.

[amelaye]

The altitude option is really needed for me, one of the players of my server has discovered a flotting island high in the sky, then it has covered my land on my map ...

[basxto]

The altitude option is really needed for me, one of the players of my server has discovered a flotting island high in the sky, then it has covered my land on my map ...

That sounds like you are looking for --max-y and not giving altitudes different color. Though coloring altitude should be possible.