python - Divide all rows in a pandas dataframe by a specific row -


i have pandas dataframe below:

   sample_name  c14-cer_mean  c16-cer_mean  c18-cer_mean  c18:1-cer_mean  0          1 1      0.124749      0.285659     35.302029        8.173144    1         1 10      0.332976      0.656197     39.220933        6.446620    2         1 13      0.227423      0.272440     26.866943        5.763723    3         1 14      0.128359      0.604903     29.848169        6.801633    4          1 5      0.204000      0.242652     21.354158        4.637632    5          1 6      0.122697      0.412868     25.168258        5.866785    6          1 9      0.161679      0.569781     28.707720        6.525267    7        blank      0.408713      0.526573      0.531430        0.111025

i want dataframe values in rows have been divided values in row sample_name "blank" (normalizing sample "blank"). how can achieve in pandas?

you can select rows , slice df using loc , call div , pass last row using iloc[-1]:

in [58]: df.loc[:,'c14-cer_mean':] = df.loc[:,'c14-cer_mean':].div(df.iloc[-1]['c14-cer_mean':]) df  out[58]:       sample_name c14-cer_mean c16-cer_mean c18-cer_mean c18:1-cer_mean index                                                                   0             1 1     0.305224     0.542487      66.4284        73.6153 1            1 10     0.814694      1.24617      73.8026        58.0646 2            1 13     0.556437     0.517383      50.5559        51.9137 3            1 14     0.314057      1.14875      56.1658        61.2622 4             1 5     0.499128     0.460814      40.1824        41.7711 5             1 6     0.300203     0.784066      47.3595         52.842 6             1 9     0.395581      1.08206      54.0198         58.773 7           blank            1            1            1              1

Comments

Post a Comment

Popular posts from this blog

get url and add instance to a model with prefilled foreign key :django admin -

Image
i have page in each contest shown in row. each row contains contest id , link other model names have foreign key contest. news model: class news(models.model): title = models.charfield(max_length=50, null=true) description = models.textfield() time = models.timefield( default= datetime.datetime.now().time()) contest = models.foreignkey(contest) i want use admin adding , changing these models. want when user clicks on 'news' has foreign key contest id=1, shows list of news value foreign key. use {% instance in instances %} <tr class="{% cycle 'row1' 'row2' %}"> <td>{{ instance.title }}</td> <td>{{ instance.starttime }}</td> <td>{{ instance.timespan }}</td> <td>{{ instance.date }}</td> <td><a href="/adm
Read more

css - Make div keyboard-scrollable in jQuery Mobile? -

from can tell, although jquery-mobile-powered pages can contain divs overflow set scroll or auto, , these divs can scrolled one-screen bar or mouse wheel, cannot scrolled using arrow keys, page-up/page-down, or home/end. instead, official "page" div (with data-role="page") absorbs input. perhaps other divs can't acquire focus, i'm not sure. is there way around this? edit: jsfiddle of simple example: https://jsfiddle.net/qogz0shx/ <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.4/jquery.min.js"></script> <script src="https://ajax.googleapis.com/ajax/libs/jquerymobile/1.4.5/jquery.mobile.min.js"> </script> <link rel="stylesheet" href="https://code.jquery.com/mobile/1.4.5/jquery.mobile-1.4.5.css"/> <style> #outer { overflow:scroll; height: 50vh; width: 50vw; } #inner { height: 500vh; width: 500vw; } &l
Read more

ruby on rails - Seeing duplicate requests handled with Unicorn -

recently upgraded our ec2 instances c3.large in order boost more unicorn workers handle increased traffic our site. (6xworkers per machine - 2 ec2 instances). when did this, started seeing duplicate records being created! looks somehow, maybe 2 unicorn workers attempting process same request? in nginx logs see 1 [post] request particular rails controller - yet 2 records being created in database. i'm hitting kind of race condition issue - have no idea how debug this. doesn't happen time, when it's frustrating well. noticed 2 database records within 5 seconds of each other. (and yes disable button when user clicks submit button). unicorn 4.8.2 ruby 1.9.3 rails 3.2.14 any great! thanks! although may not fix problem, upgrade ruby 2.0.0. there blog mentioning idea upgrade ruby 2.0.0 if using unicorn. for example: https://www.digitalocean.com/community/articles/how-to-optimize-unicorn-workers-in-a-ruby-on-rails-app specifically: if using ruby 1.9,
Read more