How to find second,third,etc maximum peak of list
$begingroup$
I need to find all values of peaks.
I have Table
with 10000 elements in it and I plot a graphic using ListPlot
.
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?
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]]
plotting list-manipulation mathematical-optimization peak-detection
$endgroup$
add a comment |
$begingroup$
I need to find all values of peaks.
I have Table
with 10000 elements in it and I plot a graphic using ListPlot
.
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?
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]]
plotting list-manipulation mathematical-optimization peak-detection
$endgroup$
1
$begingroup$
Did you tryFindPeaks
?
$endgroup$
– J42161217
Nov 27 '18 at 0:33
$begingroup$
Yes, I did. I added the result above.
$endgroup$
– John
Nov 27 '18 at 0:45
add a comment |
$begingroup$
I need to find all values of peaks.
I have Table
with 10000 elements in it and I plot a graphic using ListPlot
.
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?
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]]
plotting list-manipulation mathematical-optimization peak-detection
$endgroup$
I need to find all values of peaks.
I have Table
with 10000 elements in it and I plot a graphic using ListPlot
.
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?
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]]
plotting list-manipulation mathematical-optimization peak-detection
plotting list-manipulation mathematical-optimization peak-detection
edited Nov 27 '18 at 0:50
John
asked Nov 27 '18 at 0:30
JohnJohn
32016
32016
1
$begingroup$
Did you tryFindPeaks
?
$endgroup$
– J42161217
Nov 27 '18 at 0:33
$begingroup$
Yes, I did. I added the result above.
$endgroup$
– John
Nov 27 '18 at 0:45
add a comment |
1
$begingroup$
Did you tryFindPeaks
?
$endgroup$
– 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
add a comment |
2 Answers
2
active
oldest
votes
$begingroup$
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]]
$endgroup$
add a comment |
$begingroup$
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}}
$endgroup$
add a comment |
Your Answer
StackExchange.ifUsing("editor", function () {
return StackExchange.using("mathjaxEditing", function () {
StackExchange.MarkdownEditor.creationCallbacks.add(function (editor, postfix) {
StackExchange.mathjaxEditing.prepareWmdForMathJax(editor, postfix, [["$", "$"], ["\\(","\\)"]]);
});
});
}, "mathjax-editing");
StackExchange.ready(function() {
var channelOptions = {
tags: "".split(" "),
id: "387"
};
initTagRenderer("".split(" "), "".split(" "), channelOptions);
StackExchange.using("externalEditor", function() {
// Have to fire editor after snippets, if snippets enabled
if (StackExchange.settings.snippets.snippetsEnabled) {
StackExchange.using("snippets", function() {
createEditor();
});
}
else {
createEditor();
}
});
function createEditor() {
StackExchange.prepareEditor({
heartbeatType: 'answer',
autoActivateHeartbeat: false,
convertImagesToLinks: false,
noModals: true,
showLowRepImageUploadWarning: true,
reputationToPostImages: null,
bindNavPrevention: true,
postfix: "",
imageUploader: {
brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
allowUrls: true
},
onDemand: true,
discardSelector: ".discard-answer"
,immediatelyShowMarkdownHelp:true
});
}
});
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fmathematica.stackexchange.com%2fquestions%2f186752%2fhow-to-find-second-third-etc-maximum-peak-of-list%23new-answer', 'question_page');
}
);
Post as a guest
Required, but never shown
2 Answers
2
active
oldest
votes
2 Answers
2
active
oldest
votes
active
oldest
votes
active
oldest
votes
$begingroup$
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]]
$endgroup$
add a comment |
$begingroup$
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]]
$endgroup$
add a comment |
$begingroup$
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]]
$endgroup$
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]]
answered Nov 27 '18 at 0:53
kglrkglr
185k10202421
185k10202421
add a comment |
add a comment |
$begingroup$
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}}
$endgroup$
add a comment |
$begingroup$
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}}
$endgroup$
add a comment |
$begingroup$
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}}
$endgroup$
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}}
answered Nov 27 '18 at 1:15
J42161217J42161217
3,802321
3,802321
add a comment |
add a comment |
Thanks for contributing an answer to Mathematica Stack Exchange!
- Please be sure to answer the question. Provide details and share your research!
But avoid …
- Asking for help, clarification, or responding to other answers.
- Making statements based on opinion; back them up with references or personal experience.
Use MathJax to format equations. MathJax reference.
To learn more, see our tips on writing great answers.
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fmathematica.stackexchange.com%2fquestions%2f186752%2fhow-to-find-second-third-etc-maximum-peak-of-list%23new-answer', 'question_page');
}
);
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
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