How To Change Scaling In Excel For Mac

How to change scale of axis in chart in excel. Excel charts give them a try office watch. Axis scale excel 2013 generated on lbartman.com. Show printable version!!! Hide the show. To save images bellow, right click on shown image then save as.png. RELATED POST Not Available.

Let's say you want to scale a range [min,max] to [a,b]. You're looking for a (continuous) function that satisfies f(min) = a f(max) = b In your case, a would be 1 and b would be 30, but let's start with something simpler and try to map [min,max] into the range [0,1].

Putting min into a function and getting out 0 could be accomplished with f(x) = x - min ===> f(min) = min - min = 0 So that's almost what we want. But putting in max would give us max - min when we actually want 1. So we'll have to scale it: x - min max - min f(x) = --------- ===> f(min) = 0; f(max) = --------- = 1 max - min max - min which is what we want. So we need to do a translation and a scaling. Now if instead we want to get arbitrary values of a and b, we need something a little more complicated: (b-a)(x - min) f(x) = -------------- + a max - min You can verify that putting in min for x now gives a, and putting in max gives b. You might also notice that (b-a)/(max-min) is a scaling factor between the size of the new range and the size of the original range.

So really we are first translating x by -min, scaling it to the correct factor, and then translating it back up to the new minimum value of a. Hope this helps. Here's how I understand it: What percent does x lie in a range Let's assume you have a range from 0 to 100. Given an arbitrary number from that range, what 'percent' from that range does it lie in? This should be pretty simple, 0 would be 0%, 50 would be 50% and 100 would be 100%. Now, what if your range was 20 to 100? We cannot apply the same logic as above (divide by 100) because: 20 / 100 doesn't give us 0 ( 20 should be 0% now).

This should be simple to fix, we just need to make the numerator 0 for the case of 20. We can do that by subtracting: (20 - 20) / 100 However, this doesn't work for 100 anymore because: (100 - 20) / 100 doesn't give us 100%. Again, we can fix this by subtracting from the denominator as well: (100 - 20) / (100 - 20) A more generalized equation for finding out what% x lies in a range would be: (x - MIN) / (MAX - MIN) Scale range to another range Now that we know what percent a number lies in a range, we can apply it to map the number to another range. Let's go through an example. Old range = [200, 1000] new range = [10, 20] If we have a number in the old range, what would the number be in the new range? Let's say the number is 400. First, figure out what percent 400 is within the old range.

We can apply our equation above. (400 - 200) / (1000 - 200) = 0.25 So, 400 lies in 25% of the old range. We just need to figure out what number is 25% of the new range. Think about what 50% of [0, 20] is. It would be 10 right?

How did you arrive at that answer? Well, we can just do: 20 * 0.5 = 10 But, what about from [10, 20]?

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We need to shift everything by 10 now. Eg: ((20 - 10) * 0.5) + 10 a more generalized formula would be: ((MAX - MIN) * PERCENT) + MIN To the original example of what 25% of [10, 20] is: ((20 - 10) * 0.25) + 10 = 12.5 So, 400 in the range [200, 1000] would map to 12.5 in the range [10, 20] TLDR To map x from old range to new range: OLD PERCENT = (x - OLD MIN) / (OLD MAX - OLD MIN) NEW X = ((NEW MAX - NEW MIN) * OLD PERCENT) + NEW MIN.