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- How to manipulate axes scales in Graph Builder when using log units

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Jan 10, 2014 3:04 PM
(3897 views)

Hello,

Please see attached data file.

I am trying to plot "actual" vs. "perceived" separated by "context". I have created a graph doing this and saved the script as "Graph - Perceived ~ Actual x Context".

(1.png)

The data is skewed so I created via the formula function two new variable by logging both "actual" vs. "perceived". I then created a new graph and saved the script as " Graph - Ln(Perceived ) ~ Ln(Actual) x Context".

(2.png)

This new figure gives me the shape I want but the axes are not interpretable. How do I create axes that operate on the **original** raw numbers and create a graph that has axes like the following:

(3.png)

Basically, how do I draw a figure that logs the data of the x and y axes but presents the data in the original units, rather than log units?

Thanks.

Adrian

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Jan 11, 2014 6:11 AM
(6746 views)

Make the plot with untransformed data and dubbelclick on an axis to bring up the axis specification dialog and change the scale setting from linear to log.

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Jan 11, 2014 6:11 AM
(6747 views)

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Jan 16, 2014 6:22 AM
(3700 views)

Also:

analyze -> fit Y by X

perceived = Y

actual = X

Click OK

red triangle -> group by -> context

red triangle -> fit special

Change Y transformation to natural log

Change X transformation to natural log

Change degree from 1 Linear to 2 Quadratic

Click OK

Double click the Y axis and change the scale from linear to log Double click the X axis and change the scale from linear to log