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Is it possible to make the x-axis logarithmic axis but without using Logarithmic scaling option?

Cornel
18-Opal

Is it possible to make the x-axis logarithmic axis but without using Logarithmic scaling option?

Hello,

CornelBejan_0-1676315017551.png

CornelBejan_1-1676315027622.png

CornelBejan_2-1676315037978.png

CornelBejan_3-1676315047068.png

CornelBejan_4-1676315054165.png

CornelBejan_5-1676315067717.png

CornelBejan_6-1676315078699.png

CornelBejan_7-1676315086824.png

 

1.JPG

2.JPG

 

My question here is: how can I make the x-axis of the frequencies (freq) be the logarithmic axis (Log10), but without using the Logarithmic scaling option from the menu?

 

Same thing for the Phase plot:

 

CornelBejan_8-1676315381086.png

CornelBejan_9-1676315388225.png

3.JPG

 

4.JPG

 

Mathcad Prime 8 file attached.

Excel FirstGraphPlot.xlsx file attached.

Excel SecondGraphPlot.xlsx file attached.

 

Thank you.

4 REPLIES 4
Werner_E
24-Ruby V
(To:Cornel)

I am not sure what your problem is - is it the very last plot??

You simply have to change the scale values to see the plot.

Werner_E_0-1676318588590.png

Either manually change the three values (first, second and last axis tick) or delete all three of them to let Prime choose its own scaling.

 

Shouldn't the x-axis look the same for both plots?

The second graph (without using the Logarithmic scaling option from the menu) seems to be shifted (or something like that).

CornelBejan_4-1676319377420.png

 

 

Shouldn't the x-axis look the same for both plots?

CornelBejan_3-1676319263903.png

 

 

 

Werner_E
24-Ruby V
(To:Cornel)

> Shouldn't the x-axis look the same for both plots?

Sure not!

If you use "normal" values x and a logarithmic scale you will see, e.g. 1000.

If you use 20*log(x) at the same point you should just see 60.

Do you remember?

When I was a student, I could buy with my monthly stipend 5500 of these sheets of millimeter paper with a logarithm along two axes!

mmp.png

 

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