A study on the aptitude of color hue, value, and transparency for geographic relevance encoding in mobile maps

Figures & data

Figure 1. Examples of map stimuli for the three visual variables hue, value, and transparency in Part I.

Figure 2. Experiment design: Part I (bottom-up) and Part II (top-down).

Table 1. Mapping of GR classes to visual variables.

Figure 3. An example of a map for the visual variable value in Part II.

Table 2. Centrality and dispersion measures for time to first fixation (TFF) within the visual variables hue, value and transparency.

Hue	green	yellow	red
Mean (in ms)	1222.35	1557.04	1111.51
Median (in ms)	1013.33	1385.00	1136.67
SD (in ms)	870.18	982.13	675.40
Value	dark blue	medium blue	light blue
Mean (in ms)	983.27	1508.61	1505.154
Median (in ms)	615.00	1145.00	1370.00
SD (in ms)	842.30	1592.45	978.24
Transparency	opaque	medium-transparent	transparent
Mean (in ms)	542.90	1186.17	1799.75
Median (in ms)	465.00	1092.50	1710.00
SD (in ms)	334.94	735.84	752.69

Table 3. Centrality and dispersion measures of percentages of correct responses.

	Hue	Value	Transparency
Mean (in %)	43.89	64.44	8.67
Median (in %)	16.67	83.33	1.00
Standard deviation (in %)	46.42	41.69	33.72

Table 4. Centrality and dispersion measures of response time for the three visual variables.

	Hue	Value	Transparency
Mean (in s)	8.19	7.89	7.37
Median (in s)	6.90	7.17	6.67
Standard deviation (in s)	3.48	2.65	2.34

Table 5. Centrality and dispersion measures of time to first fixation for visual variable value and transparency.

GR	Mean		Median		SD
	Value	Transparency	Value	Transparency	Value	Transparency
High Part I	852.48	890.93	713.00	895.00	527.47	522.06
High Part II	983.27	542.90	615.00	465.00	842.30	334.94
Medium Part I	1016.28	942.53	900.00	980.00	619.37	571.36
Medium Part II	1508.61	1186.17	1145.00	1092.00	1592.45	735.84
Low Part I	1013.04	1039.57	945.00	1033.30	552.99	425.44
Low Part II	1505.15	1799.75	1370.00	1710.00	978.24	752.69

Data availability statement

The data that support the findings of this study are available in anonymized form on the open repository OSF https://doi.org/10.17605/OSF.IO/NPGZC.