How to rotate only one axis, being both on logarithmic scale












1












$begingroup$


I have the following chart:



enter image description here



And I want to overlay an Excel graph over it. However, between the absice (Frequency, cps) and ordinate (Peak Displacement, in) there is an angle of 135 degrees. The problem is Excel graphs can only plot with orthogonal (90 degrees) axes.



How do I transform the values of the ordinate axis (Peak Displacement, in) so that the excel plot match the chart?



My wrong solution is: y = x + sqrt(2)*PD, (PD: Peak Displacement)



Identified problems are:




  1. scales are logarithmic and all the straight lines of the following sketch are actually curves.

  2. The origin is not (0,0) but rather close to (0.1, 0.0013)


enter image description here






geometry







share|cite|improve this question











$endgroup$

















    1












    $begingroup$


    I have the following chart:



    enter image description here



    And I want to overlay an Excel graph over it. However, between the absice (Frequency, cps) and ordinate (Peak Displacement, in) there is an angle of 135 degrees. The problem is Excel graphs can only plot with orthogonal (90 degrees) axes.



    How do I transform the values of the ordinate axis (Peak Displacement, in) so that the excel plot match the chart?



    My wrong solution is: y = x + sqrt(2)*PD, (PD: Peak Displacement)



    Identified problems are:




    1. scales are logarithmic and all the straight lines of the following sketch are actually curves.

    2. The origin is not (0,0) but rather close to (0.1, 0.0013)


    enter image description here






    geometry







    share|cite|improve this question











    $endgroup$















      1












      1








      1





      $begingroup$


      I have the following chart:



      enter image description here



      And I want to overlay an Excel graph over it. However, between the absice (Frequency, cps) and ordinate (Peak Displacement, in) there is an angle of 135 degrees. The problem is Excel graphs can only plot with orthogonal (90 degrees) axes.



      How do I transform the values of the ordinate axis (Peak Displacement, in) so that the excel plot match the chart?



      My wrong solution is: y = x + sqrt(2)*PD, (PD: Peak Displacement)



      Identified problems are:




      1. scales are logarithmic and all the straight lines of the following sketch are actually curves.

      2. The origin is not (0,0) but rather close to (0.1, 0.0013)


      enter image description here






      geometry







      share|cite|improve this question











      $endgroup$




      I have the following chart:



      enter image description here



      And I want to overlay an Excel graph over it. However, between the absice (Frequency, cps) and ordinate (Peak Displacement, in) there is an angle of 135 degrees. The problem is Excel graphs can only plot with orthogonal (90 degrees) axes.



      How do I transform the values of the ordinate axis (Peak Displacement, in) so that the excel plot match the chart?



      My wrong solution is: y = x + sqrt(2)*PD, (PD: Peak Displacement)



      Identified problems are:




      1. scales are logarithmic and all the straight lines of the following sketch are actually curves.

      2. The origin is not (0,0) but rather close to (0.1, 0.0013)


      enter image description here






      geometry




      geometry






      share|cite|improve this question















      share|cite|improve this question













      share|cite|improve this question




      share|cite|improve this question








      edited Jan 11 at 20:25







      Jorge

















      asked Jan 11 at 19:43









      JorgeJorge

      1063




      1063






















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