What are the advantages of using an isoline map for showing pedestrian count?
It’s because it shows easily which areas have the most or least pedestrians and therefore how important each area is for those pedestrians. It can also show surprising results such as a small alley or street having an unusually high pedestrian count. Those sort of things show up easily on an isoline map just as hills show up easily on a contour map. Then the town planners can spot it easily and ask why such an unimportant street or path is really so important. They might discover that taking another route means making a tough road crossing close to a junction or that other routes have some other disadvantage compared to the most-used route that didn’t show up until the isoline map was looked at and the planners started thinking about it. That helps with town planning and deciding how much of a budget should be spent on each area and when used with other data, like traffic maps and facilities it can show whether the area has been neglected because it wasn’t really known before how busy
