Php Statistic Bar Chart

[david4u]

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Thanks. I am studying the jpgraph now. I will ask question if Ineed to. Thanks for your explanation though.

One more thing. I have got to the level where I have made this bar chart with my php code for example:

1. How is the survey?
response:

a. Good ------------------100% (1)

b. Not too good ----------100% (1)

c. Not sure----------------50% (2)


I only want to change the colour of the bar chart in good to red, Not too good to blue and Not sure to green....
I do not know how to do that and also how to find the average of the total responses.

If you can still help, I am online all day pls.

[Icheb]

I only want to change the colour of the bar chart in good to red, Not too good to blue and Not sure to green....

Just use a simple if statement.

I do not know how to do that and also how to find the average of the total responses.

The formula for averages is still
percentage = number of votes for x / number of total votes * 100