[Tutor] FW: (no subject)

Albert-Jan Roskam fomcl at yahoo.com
Fri Nov 30 12:15:34 CET 2012


<snip>


>> Hi, im trying to write a script which randomly generates 10,000 points(x,y)
>> in the unit square(so range between 0 and 1 for both x and y).so far I have
>> written the code below in red,
>
>What red? I see no red.
>
>Please do not rely on colour in email, for at least two reasons:
>
>1) For colour to be visible in your email, you must have so-called "Rich Text"
>   (actually HTML mail) turned on. Many people have HTML mail turned off,
>   because it is a security and privacy threat, or simply do not appreciate
>   having somebody else's choice of colour and font being forced on them.
>
>2) About 8% of men and 0.5% of women have red-green colour-blindness, with other
>   forms of colour-blindness being less common. All up, about 1 in 10 men and 1
>   in 100 women cannot easily or at all distinguish colours. Others may be
>   partially or completely blind. Using a screen reader, they can still "read"
>   the words you send, but will have no idea at all about colours.
>


Aside from colour-blindness, using (saturated) red and blue is an ergnomical no-no as the human eye is relatively insensitive to those colors: 

http://www.lawrence-najjar.com/papers/Using_color_effectively.html

http://hyperphysics.phy-astr.gsu.edu/hbase/vision/colcon.html



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