How to find second,third,etc maximum peak of list












2












$begingroup$


I need to find all values of peaks.
I have Table with 10000 elements in it and I plot a graphic using ListPlot.
enter image description here



Then I tried to find peaks:



tbl1 = Table[tbl[[i, 2]], {i, 1, Length[tbl]}];

gA = Max[tbl1]

gAm = Part[tbl, Position[tbl1 , gA ][[1, 1]], 1]


Here tbl my Table with Data
And get:



0.15

8.751


So I find the last peak starting. How I can find other?
enter image description here
I upload a .txt file with data to my google drive
here .



I also tried to use FindPeaks but it's wrong:



peakpositions = FindPeaks[tbl[[All, 2]]]



{{116, 0.}, {1441, 0.}}




peakwavelengths = tbl[[#1, 1]] & @@@ peakpositions



{0.115, 1.44}




ListPlot[tbl, PlotRange -> All, GridLines -> {peakwavelengths, None}, 

GridLinesStyle -> Directive[Red, Thick]]


enter image description here






plotting list-manipulation mathematical-optimization peak-detection







share|improve this question











$endgroup$








  • 1




    $begingroup$
    Did you try FindPeaks?
    $endgroup$
    – J42161217
    Nov 27 '18 at 0:33










  • $begingroup$
    Yes, I did. I added the result above.
    $endgroup$
    – John
    Nov 27 '18 at 0:45
















2












$begingroup$


I need to find all values of peaks.
I have Table with 10000 elements in it and I plot a graphic using ListPlot.
enter image description here



Then I tried to find peaks:



tbl1 = Table[tbl[[i, 2]], {i, 1, Length[tbl]}];

gA = Max[tbl1]

gAm = Part[tbl, Position[tbl1 , gA ][[1, 1]], 1]


Here tbl my Table with Data
And get:



0.15

8.751


So I find the last peak starting. How I can find other?
enter image description here
I upload a .txt file with data to my google drive
here .



I also tried to use FindPeaks but it's wrong:



peakpositions = FindPeaks[tbl[[All, 2]]]



{{116, 0.}, {1441, 0.}}




peakwavelengths = tbl[[#1, 1]] & @@@ peakpositions



{0.115, 1.44}




ListPlot[tbl, PlotRange -> All, GridLines -> {peakwavelengths, None}, 

GridLinesStyle -> Directive[Red, Thick]]


enter image description here






plotting list-manipulation mathematical-optimization peak-detection







share|improve this question











$endgroup$








  • 1




    $begingroup$
    Did you try FindPeaks?
    $endgroup$
    – J42161217
    Nov 27 '18 at 0:33










  • $begingroup$
    Yes, I did. I added the result above.
    $endgroup$
    – John
    Nov 27 '18 at 0:45














2












2








2





$begingroup$


I need to find all values of peaks.
I have Table with 10000 elements in it and I plot a graphic using ListPlot.
enter image description here



Then I tried to find peaks:



tbl1 = Table[tbl[[i, 2]], {i, 1, Length[tbl]}];

gA = Max[tbl1]

gAm = Part[tbl, Position[tbl1 , gA ][[1, 1]], 1]


Here tbl my Table with Data
And get:



0.15

8.751


So I find the last peak starting. How I can find other?
enter image description here
I upload a .txt file with data to my google drive
here .



I also tried to use FindPeaks but it's wrong:



peakpositions = FindPeaks[tbl[[All, 2]]]



{{116, 0.}, {1441, 0.}}




peakwavelengths = tbl[[#1, 1]] & @@@ peakpositions



{0.115, 1.44}




ListPlot[tbl, PlotRange -> All, GridLines -> {peakwavelengths, None}, 

GridLinesStyle -> Directive[Red, Thick]]


enter image description here






plotting list-manipulation mathematical-optimization peak-detection







share|improve this question











$endgroup$




I need to find all values of peaks.
I have Table with 10000 elements in it and I plot a graphic using ListPlot.
enter image description here



Then I tried to find peaks:



tbl1 = Table[tbl[[i, 2]], {i, 1, Length[tbl]}];

gA = Max[tbl1]

gAm = Part[tbl, Position[tbl1 , gA ][[1, 1]], 1]


Here tbl my Table with Data
And get:



0.15

8.751


So I find the last peak starting. How I can find other?
enter image description here
I upload a .txt file with data to my google drive
here .



I also tried to use FindPeaks but it's wrong:



peakpositions = FindPeaks[tbl[[All, 2]]]



{{116, 0.}, {1441, 0.}}




peakwavelengths = tbl[[#1, 1]] & @@@ peakpositions



{0.115, 1.44}




ListPlot[tbl, PlotRange -> All, GridLines -> {peakwavelengths, None}, 

GridLinesStyle -> Directive[Red, Thick]]


enter image description here






plotting list-manipulation mathematical-optimization peak-detection




plotting list-manipulation mathematical-optimization peak-detection






share|improve this question















share|improve this question













share|improve this question




share|improve this question








edited Nov 27 '18 at 0:50







John

















asked Nov 27 '18 at 0:30









JohnJohn

32016




32016








  • 1




    $begingroup$
    Did you try FindPeaks?
    $endgroup$
    – J42161217
    Nov 27 '18 at 0:33










  • $begingroup$
    Yes, I did. I added the result above.
    $endgroup$
    – John
    Nov 27 '18 at 0:45














  • 1




    $begingroup$
    Did you try FindPeaks?
    $endgroup$
    – J42161217
    Nov 27 '18 at 0:33










  • $begingroup$
    Yes, I did. I added the result above.
    $endgroup$
    – John
    Nov 27 '18 at 0:45








1




1




$begingroup$
Did you try FindPeaks?
$endgroup$
– J42161217
Nov 27 '18 at 0:33




$begingroup$
Did you try FindPeaks?
$endgroup$
– J42161217
Nov 27 '18 at 0:33












$begingroup$
Yes, I did. I added the result above.
$endgroup$
– John
Nov 27 '18 at 0:45




$begingroup$
Yes, I did. I added the result above.
$endgroup$
– John
Nov 27 '18 at 0:45










2 Answers
2






active

oldest

votes


















5












$begingroup$

jumps = tbl[[1 + Flatten@Position[Sign@Differences[tbl[[All, 2]]], 1]]]



{{0.232, 0.05}, {2.411, 0.05}, {5.449, 0.1}, {8.751, 0.15}}




ListStepPlot[tbl,  Epilog -> {Red, PointSize[Large], Point[jumps]}, 

 GridLines -> Transpose[jumps]]


enter image description here






share|improve this answer









$endgroup$





















    4












    $begingroup$

    Pick[tbl,Join[{0},Sign@Differences[Last/@tbl]],1]



    {{0.232, 0.05}, {2.411, 0.05}, {5.449, 0.1}, {8.751, 0.15}}







    share|improve this answer









    $endgroup$













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      2 Answers
      2






      active

      oldest

      votes








      2 Answers
      2






      active

      oldest

      votes









      active

      oldest

      votes






      active

      oldest

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      5












      $begingroup$

      jumps = tbl[[1 + Flatten@Position[Sign@Differences[tbl[[All, 2]]], 1]]]



      {{0.232, 0.05}, {2.411, 0.05}, {5.449, 0.1}, {8.751, 0.15}}




      ListStepPlot[tbl,  Epilog -> {Red, PointSize[Large], Point[jumps]}, 
      
 GridLines -> Transpose[jumps]]


      enter image description here






      share|improve this answer









      $endgroup$


















        5












        $begingroup$

        jumps = tbl[[1 + Flatten@Position[Sign@Differences[tbl[[All, 2]]], 1]]]



        {{0.232, 0.05}, {2.411, 0.05}, {5.449, 0.1}, {8.751, 0.15}}




        ListStepPlot[tbl,  Epilog -> {Red, PointSize[Large], Point[jumps]}, 
        
 GridLines -> Transpose[jumps]]


        enter image description here






        share|improve this answer









        $endgroup$
















          5












          5








          5





          $begingroup$

          jumps = tbl[[1 + Flatten@Position[Sign@Differences[tbl[[All, 2]]], 1]]]



          {{0.232, 0.05}, {2.411, 0.05}, {5.449, 0.1}, {8.751, 0.15}}




          ListStepPlot[tbl,  Epilog -> {Red, PointSize[Large], Point[jumps]}, 
          
 GridLines -> Transpose[jumps]]


          enter image description here






          share|improve this answer









          $endgroup$



          jumps = tbl[[1 + Flatten@Position[Sign@Differences[tbl[[All, 2]]], 1]]]



          {{0.232, 0.05}, {2.411, 0.05}, {5.449, 0.1}, {8.751, 0.15}}




          ListStepPlot[tbl,  Epilog -> {Red, PointSize[Large], Point[jumps]}, 
          
 GridLines -> Transpose[jumps]]


          enter image description here







          share|improve this answer












          share|improve this answer



          share|improve this answer










          answered Nov 27 '18 at 0:53









          kglrkglr

          185k10202421




          185k10202421























              4












              $begingroup$

              Pick[tbl,Join[{0},Sign@Differences[Last/@tbl]],1]



              {{0.232, 0.05}, {2.411, 0.05}, {5.449, 0.1}, {8.751, 0.15}}







              share|improve this answer









              $endgroup$


















                4












                $begingroup$

                Pick[tbl,Join[{0},Sign@Differences[Last/@tbl]],1]



                {{0.232, 0.05}, {2.411, 0.05}, {5.449, 0.1}, {8.751, 0.15}}







                share|improve this answer









                $endgroup$
















                  4












                  4








                  4





                  $begingroup$

                  Pick[tbl,Join[{0},Sign@Differences[Last/@tbl]],1]



                  {{0.232, 0.05}, {2.411, 0.05}, {5.449, 0.1}, {8.751, 0.15}}







                  share|improve this answer









                  $endgroup$



                  Pick[tbl,Join[{0},Sign@Differences[Last/@tbl]],1]



                  {{0.232, 0.05}, {2.411, 0.05}, {5.449, 0.1}, {8.751, 0.15}}








                  share|improve this answer












                  share|improve this answer



                  share|improve this answer










                  answered Nov 27 '18 at 1:15









                  J42161217J42161217

                  3,802321




                  3,802321






























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