Replace & filter dataframe row values
I have two dataframe's one with expression and another with values. Dataframe 1 criteria column has value with column name of another dataframe. My need is to take each row values from Dataframe 2 and replace Dataframe 1 criteria without loop.
How should I do it in an optimized way ?
DataFrame 1:
Criteria point
0 chgdsl='10' 1
1 chgdt ='01022007' 2
3 chgdsl='9' 3
DataFrame 2:
chgdsl chgdt chgname
0 10 01022007 namrr
1 9 02022007 chard
2 9 01022007 exprr
I expect that when I take first row of DataFrame 2 , output of Dataframe 1 will be 10='10' , 01022007 ='01022007' 10='9'
Need to take one row at a time from Dataframe 2 and replace it in all rows of Dataframe 1.
python dataframe
asked Nov 13 '18 at 5:58
VelVel
114
add a comment |
I have two dataframe's one with expression and another with values. Dataframe 1 criteria column has value with column name of another dataframe. My need is to take each row values from Dataframe 2 and replace Dataframe 1 criteria without loop.
How should I do it in an optimized way ?
DataFrame 1:
Criteria point
0 chgdsl='10' 1
1 chgdt ='01022007' 2
3 chgdsl='9' 3
DataFrame 2:
chgdsl chgdt chgname
0 10 01022007 namrr
1 9 02022007 chard
2 9 01022007 exprr
I expect that when I take first row of DataFrame 2 , output of Dataframe 1 will be 10='10' , 01022007 ='01022007' 10='9'
Need to take one row at a time from Dataframe 2 and replace it in all rows of Dataframe 1.
python dataframe
asked Nov 13 '18 at 5:58
VelVel
114
what's your expected output?
– Sociopath
Nov 13 '18 at 6:33
when i take first row of DataFrame 2 output of Dataframe 1 will be, 10='10' , 01022007 ='01022007' 10='9'
– Vel
Nov 13 '18 at 6:34
updated the question
– Vel
Nov 13 '18 at 8:21
Also what is the structure of your dataframes? IsDF1['Criteria']a string variable?
– Sotos
Nov 13 '18 at 8:38
Yes, all values in df['Criteria'] is string
– Vel
Nov 13 '18 at 9:10
add a comment |
I have two dataframe's one with expression and another with values. Dataframe 1 criteria column has value with column name of another dataframe. My need is to take each row values from Dataframe 2 and replace Dataframe 1 criteria without loop.
How should I do it in an optimized way ?
DataFrame 1:
Criteria point
0 chgdsl='10' 1
1 chgdt ='01022007' 2
3 chgdsl='9' 3
DataFrame 2:
chgdsl chgdt chgname
0 10 01022007 namrr
1 9 02022007 chard
2 9 01022007 exprr
I expect that when I take first row of DataFrame 2 , output of Dataframe 1 will be 10='10' , 01022007 ='01022007' 10='9'
Need to take one row at a time from Dataframe 2 and replace it in all rows of Dataframe 1.
python dataframe
asked Nov 13 '18 at 5:58
VelVel
114
I have two dataframe's one with expression and another with values. Dataframe 1 criteria column has value with column name of another dataframe. My need is to take each row values from Dataframe 2 and replace Dataframe 1 criteria without loop.
How should I do it in an optimized way ?
DataFrame 1:
Criteria point
0 chgdsl='10' 1
1 chgdt ='01022007' 2
3 chgdsl='9' 3
DataFrame 2:
chgdsl chgdt chgname
0 10 01022007 namrr
1 9 02022007 chard
2 9 01022007 exprr
I expect that when I take first row of DataFrame 2 , output of Dataframe 1 will be 10='10' , 01022007 ='01022007' 10='9'
Need to take one row at a time from Dataframe 2 and replace it in all rows of Dataframe 1.
python dataframe
python dataframe
asked Nov 13 '18 at 5:58
VelVel
114
asked Nov 13 '18 at 5:58
VelVel
114
edited Nov 13 '18 at 9:21
Vel
asked Nov 13 '18 at 5:58
VelVel
114
asked Nov 13 '18 at 5:58
VelVel
114
asked Nov 13 '18 at 5:58
VelVel
114
114
what's your expected output?
– Sociopath
Nov 13 '18 at 6:33
when i take first row of DataFrame 2 output of Dataframe 1 will be, 10='10' , 01022007 ='01022007' 10='9'
– Vel
Nov 13 '18 at 6:34
updated the question
– Vel
Nov 13 '18 at 8:21
Also what is the structure of your dataframes? IsDF1['Criteria']a string variable?
– Sotos
Nov 13 '18 at 8:38
Yes, all values in df['Criteria'] is string
– Vel
Nov 13 '18 at 9:10
add a comment |
what's your expected output?
– Sociopath
Nov 13 '18 at 6:33
when i take first row of DataFrame 2 output of Dataframe 1 will be, 10='10' , 01022007 ='01022007' 10='9'
– Vel
Nov 13 '18 at 6:34
updated the question
– Vel
Nov 13 '18 at 8:21
Also what is the structure of your dataframes? IsDF1['Criteria']a string variable?
– Sotos
Nov 13 '18 at 8:38
Yes, all values in df['Criteria'] is string
– Vel
Nov 13 '18 at 9:10
what's your expected output?
– Sociopath
Nov 13 '18 at 6:33
what's your expected output?
– Sociopath
Nov 13 '18 at 6:33
when i take first row of DataFrame 2 output of Dataframe 1 will be, 10='10' , 01022007 ='01022007' 10='9'
– Vel
Nov 13 '18 at 6:34
when i take first row of DataFrame 2 output of Dataframe 1 will be, 10='10' , 01022007 ='01022007' 10='9'
– Vel
Nov 13 '18 at 6:34
updated the question
– Vel
Nov 13 '18 at 8:21
updated the question
– Vel
Nov 13 '18 at 8:21
Also what is the structure of your dataframes? Is
DF1['Criteria'] a string variable?– Sotos
Nov 13 '18 at 8:38
Also what is the structure of your dataframes? Is
DF1['Criteria'] a string variable?– Sotos
Nov 13 '18 at 8:38
Yes, all values in df['Criteria'] is string
– Vel
Nov 13 '18 at 9:10
Yes, all values in df['Criteria'] is string
– Vel
Nov 13 '18 at 9:10
add a comment |
0
active
oldest
votes
Your Answer
StackExchange.ifUsing("editor", function ()
StackExchange.using("externalEditor", function ()
StackExchange.using("snippets", function ()
StackExchange.snippets.init();
);
);
, "code-snippets");
StackExchange.ready(function()
var channelOptions =
tags: "".split(" "),
id: "1"
;
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: true,
noModals: true,
showLowRepImageUploadWarning: true,
reputationToPostImages: 10,
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%2fstackoverflow.com%2fquestions%2f53274695%2freplace-filter-dataframe-row-values%23new-answer', 'question_page');
);
Post as a guest
Required, but never shown
0
active
oldest
votes
0
active
oldest
votes
active
oldest
votes
active
oldest
votes
Thanks for contributing an answer to Stack Overflow!
- 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.
To learn more, see our tips on writing great answers.
Some of your past answers have not been well-received, and you're in danger of being blocked from answering.
Please pay close attention to the following guidance:
- 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.
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%2fstackoverflow.com%2fquestions%2f53274695%2freplace-filter-dataframe-row-values%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
what's your expected output?
– Sociopath
Nov 13 '18 at 6:33
when i take first row of DataFrame 2 output of Dataframe 1 will be, 10='10' , 01022007 ='01022007' 10='9'
– Vel
Nov 13 '18 at 6:34
updated the question
– Vel
Nov 13 '18 at 8:21
Also what is the structure of your dataframes? Is
DF1['Criteria']a string variable?– Sotos
Nov 13 '18 at 8:38
Yes, all values in df['Criteria'] is string
– Vel
Nov 13 '18 at 9:10