Small palettes

This document demonstrates differences between color mapping in scales vs. Leaflet when the number of colors is 2. (For all other numbers of colors, the results should be the same between scales and Leaflet.)

Sequential

Colors: `scales::col_factor("Blues", NULL)`
Values: `1:7`

	1
	2
	3
	4
	5
	6
	7

Colors: `scales::col_factor("Blues", NULL)`
Values: `1:2`

	1
	2

Colors: `leaflet::colorFactor("Blues", NULL)`
Values: `1:2`

	1
	2

Divergent

Colors: `scales::col_factor("Spectral", NULL)`
Values: `1:7`

	1
	2
	3
	4
	5
	6
	7

Colors: `scales::col_factor("Spectral", NULL)`
Values: `1:2`

	1
	2

Colors: `leaflet::colorFactor("Spectral", NULL)`
Values: `1:2`

	1
	2

Colors: `scales::col_factor("RdYlBu", NULL)`
Values: `1:7`

	1
	2
	3
	4
	5
	6
	7

Colors: `scales::col_factor("RdYlBu", NULL)`
Values: `1:2`

	1
	2

Colors: `leaflet::colorFactor("RdYlBu", NULL)`
Values: `1:2`

	1
	2

Qualitative

Colors: `scales::col_factor("Accent", NULL)`
Values: `1:7`

	1
	2
	3
	4
	5
	6
	7

Colors: `scales::col_factor("Accent", NULL)`
Values: `1:2`

	1
	2

Colors: `leaflet::colorFactor("Accent", NULL)`
Values: `1:2`

	1
	2

Small palettes

Sequential

Colors: scales::col_factor("Blues", NULL) Values: 1:7

Colors: scales::col_factor("Blues", NULL) Values: 1:2

Colors: leaflet::colorFactor("Blues", NULL) Values: 1:2

Divergent

Colors: scales::col_factor("Spectral", NULL) Values: 1:7

Colors: scales::col_factor("Spectral", NULL) Values: 1:2

Colors: leaflet::colorFactor("Spectral", NULL) Values: 1:2

Colors: scales::col_factor("RdYlBu", NULL) Values: 1:7

Colors: scales::col_factor("RdYlBu", NULL) Values: 1:2

Colors: leaflet::colorFactor("RdYlBu", NULL) Values: 1:2