Filter out rows/columns which hold less 10% of the results in a matrix
0
I have a matrix build from data in a similar structure:
airport.departure <- c("CDG", "QNY", "QXO", "CDG", "QNY")
airport.arrival <- c("SYD", "CDG", "QNY", "SYD", "QXO")
amount <- c(1, 3, 1, 10, 5)
df <- data.frame(airport.departure, airport.arrival, amount)
xtabs(amount ~ airport.arrival + airport.departure
That results in like here:
airport.departure
airport.arrival CDG QNY QXO
CDG 0 3 0
QNY 0 0 1
QXO 0 5 0
SYD 11 0 0
Now I need to filter out rows/columns which contain a very low amount of the values. Only rows/columns which contain more than 10% of the total data should be shown.
r dataframe matrix
asked Nov 21 '18 at 15:01
ConfusulumConfusulum
225
add a comment |
0
I have a matrix build from data in a similar structure:
airport.departure <- c("CDG", "QNY", "QXO", "CDG", "QNY")
airport.arrival <- c("SYD", "CDG", "QNY", "SYD", "QXO")
amount <- c(1, 3, 1, 10, 5)
df <- data.frame(airport.departure, airport.arrival, amount)
xtabs(amount ~ airport.arrival + airport.departure
That results in like here:
airport.departure
airport.arrival CDG QNY QXO
CDG 0 3 0
QNY 0 0 1
QXO 0 5 0
SYD 11 0 0
Now I need to filter out rows/columns which contain a very low amount of the values. Only rows/columns which contain more than 10% of the total data should be shown.
r dataframe matrix
asked Nov 21 '18 at 15:01
ConfusulumConfusulum
225
2
That code looks familiar :) Can you please post what you have tried as well?
– Sotos
Nov 21 '18 at 15:03
2
your question should always contain the desired result. Also read my comment on the very familiar question. Then you will google:"remove columns rows based on condition r".
– Andre Elrico
Nov 21 '18 at 15:09
1
Please, Confusulum, please do some research about R. There are several really good tutorials on R (google/bing/rseek are your friends) that demonstrate selecting rows or columns based on some condition. Even if you choose to not use google or bing, SO has a lot of questions that likely contain what you are looking for (one such search on SO:[r] matrix filter column). Regardless, please search before you ask, you'll often get what you need much faster. idownvotedbecau.se/noresearch
– r2evans
Nov 21 '18 at 15:17
Hello again @Sotos! The advices of you other two guys have not helped me sadly. I have researched and am trying to figure the prerequisits out that need to be fullfilled before I can do the conversion that I want, but R is a language that I don't understand. I would not have asked if time wasn't an issue. I understand that this kind of posts annoy you, though. Sorry for wasting your time and have nice evening.
– Confusulum
Nov 21 '18 at 18:10
add a comment |
0
0
0
I have a matrix build from data in a similar structure:
airport.departure <- c("CDG", "QNY", "QXO", "CDG", "QNY")
airport.arrival <- c("SYD", "CDG", "QNY", "SYD", "QXO")
amount <- c(1, 3, 1, 10, 5)
df <- data.frame(airport.departure, airport.arrival, amount)
xtabs(amount ~ airport.arrival + airport.departure
That results in like here:
airport.departure
airport.arrival CDG QNY QXO
CDG 0 3 0
QNY 0 0 1
QXO 0 5 0
SYD 11 0 0
Now I need to filter out rows/columns which contain a very low amount of the values. Only rows/columns which contain more than 10% of the total data should be shown.
r dataframe matrix
asked Nov 21 '18 at 15:01
ConfusulumConfusulum
225
I have a matrix build from data in a similar structure:
airport.departure <- c("CDG", "QNY", "QXO", "CDG", "QNY")
airport.arrival <- c("SYD", "CDG", "QNY", "SYD", "QXO")
amount <- c(1, 3, 1, 10, 5)
df <- data.frame(airport.departure, airport.arrival, amount)
xtabs(amount ~ airport.arrival + airport.departure
That results in like here:
airport.departure
airport.arrival CDG QNY QXO
CDG 0 3 0
QNY 0 0 1
QXO 0 5 0
SYD 11 0 0
Now I need to filter out rows/columns which contain a very low amount of the values. Only rows/columns which contain more than 10% of the total data should be shown.
r dataframe matrix
r dataframe matrix
asked Nov 21 '18 at 15:01
ConfusulumConfusulum
225
asked Nov 21 '18 at 15:01
ConfusulumConfusulum
225
edited Nov 21 '18 at 15:03
Confusulum
asked Nov 21 '18 at 15:01
ConfusulumConfusulum
225
asked Nov 21 '18 at 15:01
ConfusulumConfusulum
225
asked Nov 21 '18 at 15:01
ConfusulumConfusulum
225
225
2
That code looks familiar :) Can you please post what you have tried as well?
– Sotos
Nov 21 '18 at 15:03
2
your question should always contain the desired result. Also read my comment on the very familiar question. Then you will google:"remove columns rows based on condition r".
– Andre Elrico
Nov 21 '18 at 15:09
1
Please, Confusulum, please do some research about R. There are several really good tutorials on R (google/bing/rseek are your friends) that demonstrate selecting rows or columns based on some condition. Even if you choose to not use google or bing, SO has a lot of questions that likely contain what you are looking for (one such search on SO:[r] matrix filter column). Regardless, please search before you ask, you'll often get what you need much faster. idownvotedbecau.se/noresearch
– r2evans
Nov 21 '18 at 15:17
Hello again @Sotos! The advices of you other two guys have not helped me sadly. I have researched and am trying to figure the prerequisits out that need to be fullfilled before I can do the conversion that I want, but R is a language that I don't understand. I would not have asked if time wasn't an issue. I understand that this kind of posts annoy you, though. Sorry for wasting your time and have nice evening.
– Confusulum
Nov 21 '18 at 18:10
add a comment |
2
That code looks familiar :) Can you please post what you have tried as well?
– Sotos
Nov 21 '18 at 15:03
2
your question should always contain the desired result. Also read my comment on the very familiar question. Then you will google:"remove columns rows based on condition r".
– Andre Elrico
Nov 21 '18 at 15:09
1
Please, Confusulum, please do some research about R. There are several really good tutorials on R (google/bing/rseek are your friends) that demonstrate selecting rows or columns based on some condition. Even if you choose to not use google or bing, SO has a lot of questions that likely contain what you are looking for (one such search on SO:[r] matrix filter column). Regardless, please search before you ask, you'll often get what you need much faster. idownvotedbecau.se/noresearch
– r2evans
Nov 21 '18 at 15:17
Hello again @Sotos! The advices of you other two guys have not helped me sadly. I have researched and am trying to figure the prerequisits out that need to be fullfilled before I can do the conversion that I want, but R is a language that I don't understand. I would not have asked if time wasn't an issue. I understand that this kind of posts annoy you, though. Sorry for wasting your time and have nice evening.
– Confusulum
Nov 21 '18 at 18:10
2
2
That code looks familiar :) Can you please post what you have tried as well?
– Sotos
Nov 21 '18 at 15:03
That code looks familiar :) Can you please post what you have tried as well?
– Sotos
Nov 21 '18 at 15:03
2
2
your question should always contain the desired result. Also read my comment on the very familiar question. Then you will google:
"remove columns rows based on condition r".– Andre Elrico
Nov 21 '18 at 15:09
your question should always contain the desired result. Also read my comment on the very familiar question. Then you will google:
"remove columns rows based on condition r".– Andre Elrico
Nov 21 '18 at 15:09
1
1
Please, Confusulum, please do some research about R. There are several really good tutorials on R (google/bing/rseek are your friends) that demonstrate selecting rows or columns based on some condition. Even if you choose to not use google or bing, SO has a lot of questions that likely contain what you are looking for (one such search on SO:
[r] matrix filter column). Regardless, please search before you ask, you'll often get what you need much faster. idownvotedbecau.se/noresearch– r2evans
Nov 21 '18 at 15:17
Please, Confusulum, please do some research about R. There are several really good tutorials on R (google/bing/rseek are your friends) that demonstrate selecting rows or columns based on some condition. Even if you choose to not use google or bing, SO has a lot of questions that likely contain what you are looking for (one such search on SO:
[r] matrix filter column). Regardless, please search before you ask, you'll often get what you need much faster. idownvotedbecau.se/noresearch– r2evans
Nov 21 '18 at 15:17
Hello again @Sotos! The advices of you other two guys have not helped me sadly. I have researched and am trying to figure the prerequisits out that need to be fullfilled before I can do the conversion that I want, but R is a language that I don't understand. I would not have asked if time wasn't an issue. I understand that this kind of posts annoy you, though. Sorry for wasting your time and have nice evening.
– Confusulum
Nov 21 '18 at 18:10
Hello again @Sotos! The advices of you other two guys have not helped me sadly. I have researched and am trying to figure the prerequisits out that need to be fullfilled before I can do the conversion that I want, but R is a language that I don't understand. I would not have asked if time wasn't an issue. I understand that this kind of posts annoy you, though. Sorry for wasting your time and have nice evening.
– Confusulum
Nov 21 '18 at 18:10
add a comment |
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2
That code looks familiar :) Can you please post what you have tried as well?
– Sotos
Nov 21 '18 at 15:03
2
your question should always contain the desired result. Also read my comment on the very familiar question. Then you will google:
"remove columns rows based on condition r".– Andre Elrico
Nov 21 '18 at 15:09
1
Please, Confusulum, please do some research about R. There are several really good tutorials on R (google/bing/rseek are your friends) that demonstrate selecting rows or columns based on some condition. Even if you choose to not use google or bing, SO has a lot of questions that likely contain what you are looking for (one such search on SO:
[r] matrix filter column). Regardless, please search before you ask, you'll often get what you need much faster. idownvotedbecau.se/noresearch– r2evans
Nov 21 '18 at 15:17
Hello again @Sotos! The advices of you other two guys have not helped me sadly. I have researched and am trying to figure the prerequisits out that need to be fullfilled before I can do the conversion that I want, but R is a language that I don't understand. I would not have asked if time wasn't an issue. I understand that this kind of posts annoy you, though. Sorry for wasting your time and have nice evening.
– Confusulum
Nov 21 '18 at 18:10