python - Mean of a grouped-by pandas dataframe -

-



i need calculate mean per day of colums duration , km rows value ==1 , values = 0. 

df out[20]:                            date duration km   value 0   2015-03-28 09:07:00.800001    0      0    0 1   2015-03-28 09:36:01.819998    1      2    1 2   2015-03-30 09:36:06.839997    1      3    1  3   2015-03-30 09:37:27.659997    nan    5    0  4   2015-04-22 09:51:40.440003    3      7    0 5   2015-04-23 10:15:25.080002    0      nan  1

how can modify solution in order have means duration_value0, duration_value1, km_value0 , km_value1?

df = df.set_index('date').groupby(pd.grouper(freq='d')).mean().dropna(how='all') print (df)             duration   km date                      2015-03-28       0.5  1.0 2015-03-30       1.5  4.0 2015-04-22       3.0  7.0 2015-04-23       0.0  0.0

i think looking pivot table i.e 

df.pivot_table(values=['duration','km'],columns=['value'],index=df['date'].dt.date,aggfunc='mean')

output:

            duration        km      value             0    1    0    1 date                               2015-03-28      0.0  1.0  0.0  2.0 2015-03-30      nan  1.0  5.0  3.0 2015-04-22      3.0  nan  7.0  nan 2015-04-23      nan  0.0  nan  nan in [24]:

if want new column names distance0,distance1 ... can use list comprehension i.e if store pivot table in ndf 

ndf.columns = [i[0]+str(i[1]) in ndf.columns]

output:

             duration0  duration1  km0  km1 date                                       2015-03-28        0.0        1.0  0.0  2.0 2015-03-30        nan        1.0  5.0  3.0 2015-04-22        3.0        nan  7.0  nan 2015-04-23        nan        0.0  nan  nan




wiki

Comments

Post a Comment

Popular posts from this blog

python - Read npy file directly from S3 StreamingBody -

-
i have many .npy (numpy) , .json files saved in s3, need download , load these files. for json files downloading files , loading dictionary using following code: obj = s3.object(bucket, key) response = obj.get() body = response['body'].read().decode('utf-8') data = json.loads(body) that way avoid writing .json file disk , reading it. now want same .npy files, equivalent? currently downloading file, saving temp file on disk , loading np.load avoid if possible. following https://stackoverflow.com/a/28196540/3509999 : obj = s3.object(bucket, key) io.bytesio(obj.get()["body"].read()) f: # rewind file f.seek(0) arr = np.load(f) wiki
Read more

kotlin - Out-projected type in generic interface prohibits the use of metod with generic parameter -

-
i start using kotlin , defined interface this: interface aadapter<vh : recyclerview.viewholder> { fun oncreateaviewholder(parent: viewgroup): vh fun onbindaviewholder(v: vh, position: int) } and when try use on code: class klasa ( private val adapter: aadapter<*> ) { fun dosth(){ //... val vh = this.adapter.oncreateaviewholder(parent) //on below line error adapter.onbindaviewholder(v, position) //... } } i error out-projected type 'aadapter<*>' prohibits use of 'public abstract fun onbindaviewholder(v: t, position: int): unit i tied add "in" or "out" definition i'm confused. how allow it. replace aadapter<*> aadapter<recyclerview.viewholder> . class klasa ( private val adapter: aadapter<recyclerview.viewholder> ) { // ... because have declared aadapter has type parameter vh type subclass of recyclerview....
Read more

Asterisk AGI Python Script to Dialplan does not work -

-
i'm stuck project have check database of sip extension incoming caller id , dial sip extension. below receive when run script on asterisk cli. -- registered sip '9125' @ 192.168.1.102:50142 > saved useragent "zoiper rv2.8.40" peer 9125 [2017-08-22 13:53:33] notice[5095]: chan_sip.c:24558 handle_response_peerpoke: peer '9125' reachable. (17ms / 2000ms) == using sip rtp tos bits 184 == using sip rtp cos mark 5 -- executing [0112617769@from-trunk:1] answer("sip/obitrunk1-0000000d", "") in new stack > 0x1ca50d0 -- probation passed - setting rtp source address 192.168.1.98:16834 -- executing [0112617769@from-trunk:2] agi("sip/obitrunk1-0000000d", "test.py") in new stack -- launched agi script /var/lib/asterisk/agi-bin/test.py args: ['/var/lib/asterisk/agi-bin/test.py'] env line: agi_request: test.py env line: agi_channel: sip/obitrunk1-0000000d env line: agi_language: en env line: a...
Read more