Igor Alshannikov

Add "band" geometry

1

See "Geom.band, Geom.hband, Geom.vband" in GadFly: https://gadflyjl.org/stable/gallery/geometries/#[Geom.band](@ref),-[Geom.hband](@ref),-[Geom.vband](@ref) 

Docs: add cookbook-style docs on static maps/DEM data support.

2

Possible sources of inspiration: - https://github.com/royalosyin/Work-with-DEM-data-using-Python-from-Simple-to-Complicated

See: - [Binned gradient colour scales — scale_colour_steps • ggplot2](https://ggplot2.tidyverse.org/reference/scale_steps.html) - [10.4 Binned colour scales | ggplot2](https://bookdown.dongzhuoer.com/hadley/ggplot2-book/binned-colour-scales.html) - [ggplot2 - R: How to manually set binned colour scale in ggplot?...

Sampling: in the warning message make it clear that a certain number of datapoints has been dropped.

1

Currently, the message is rather neutral and might be not completely understood. 

'set_theme()' should accept "feature list"

1

``` LetsPlot.set_theme(theme_bw()+flavor_solarized_dark()) ``` > ValueError: Wrong option type. Expected `theme` but was `feature-list`. Or provide other way, perhaps: ``` LetsPlot.set_flavor(flavor_solarized_dark()) ```

Support simple arithmetic expression with df.variable or aesthetic

2

For example : - `fill = change < 0` https://stackoverflow.com/questions/59989254/different-bar-color-for-positive-and-negative-bars-in-bar-plot - `fill=factor(ifelse(area=="Południe","Highlighted","Normal"))` https://stackoverflow.com/questions/22894102/change-color-of-only-one-bar-in-ggplot - `color=ifelse(df$y

See discussion: https://github.com/JetBrains/lets-plot-kotlin/discussions/54#discussioncomment-8044058

When pasting a code to a cell nice to auto-replace single quotes with double quotes in strings

1

I'm porting Python Lets-Plot notebooks to Kotlin notebooks and one of the most annoying manual operations is the replacing of single quotes with double quotes in strings. Generally, nice to...