Trying to convert data at daily frequency to weekly frequency.
In:
weeklyaaapl = pd.DataFrame()
weeklyaapl['Open'] = aapl.Open.resample('W').iloc[0]
#here I am trying to take the first value of the aapl.Open,
#that falls within the week.
Out:
ValueError: .resample() is now a deferred operation
use .resample(...).mean() instead of .resample(...)
I want the true open (the first open that prints for the week) (the open of the first day in that week).
It instead wants me to take the mean of the daily open values for a given week using .mean(), which is not the information I need.
Can't seem to interpret the error, documentation isn't helping either.
I think you need.
aapl.resample('W').first()
Output:
Open High Low Close Volume
Date
2010-01-10 30.49 30.64 30.34 30.57 123432050
2010-01-17 30.40 30.43 29.78 30.02 115557365
2010-01-24 29.76 30.74 29.61 30.72 182501620
2010-01-31 28.93 29.24 28.60 29.01 266424802
2010-02-07 27.48 28.00 27.33 27.82 187468421
I have a .xls file with thousand rows with the following structure :
id | number | date | description
1232 | 41515 | 3/9/16 | amazing
I'm trying to load it skipping the first header row and without date column (so just id, number, description and I haven't found yet how to) using Pig with the following script :
REGISTER /usr/hdp/current/pig-client/lib/piggybank.jar
data = LOAD '/user/maria_dev/file.xls' using org.apache.pig.piggybank.storage.CSVExcelStorage(',', 'NO_MULTILINE', 'NOCHANGE', 'SKIP_INPUT_HEADER')
as (Id:chararray,case_number:chararray,date:chararray,block:chararray,iucr:chararray);
data_sample = LIMIT data 10;
DUMP data_sample;
but I'm getting a weird result from the dump with lines such as :
( � � � � � �,,,,)
Thanks for your help
There is no direct way of loading .xls files into hdfs using csvexcelstorage.You will have to save the .xls file as .csv file and then use csvexcelstorage to load it.
Also note that you have 4 fields and your schema has 5 fields.
data = LOAD '/user/maria_dev/file.csv' using org.apache.pig.piggybank.storage.CSVExcelStorage(',', 'NO_MULTILINE', 'NOCHANGE', 'SKIP_INPUT_HEADER') as (Id:chararray,case_number:chararray,date:chararray,desc:chararray);
data_sample = LIMIT data 10;
DUMP data_sample;
There must be a quick solution for this, but after 30min I gave up and need help.
This is the format of source data
0h56m40s 0h57m10s 1h00m40s 1h02m15s 1h02m25s
52m47s 54m25s 54m52s 57m23s 57m43s
49m30s 54m31s 54m34s 56m35s 56m36s
47m45s 48m03s 51m02s 52m23s 53m05s
46m54s 49m29s 50m51s 51m02s 51m03s
46m09s 47m56s 50m16s 51m20s 51m53s
46m55s 47m08s 47m13s 48m16s 50m11s
and I need this in time format like 0h56m40s to 0:56:40
I tried search/replace, from h to :, m to : and removing s, works for when there's hour, but messes up for when only minutes are there.
Any tips?
You can concatenate 0: if the input string is too short:
=(IF(LEN(A1)<7,"0:","") & SUBSTITUTE(SUBSTITUTE(SUBSTITUTE(A1,"h",":"),"m",":"),"s",""))+0
The +0 part converts string to time value (change cell format to h:mm:ss). If you prefer to keep it in text format, remove +0.
In my excel file I have a time column in 12 hr clock time and a bunch of data columns. I have pasted a snippet of it in this post as a code since i cant attach a file. I am trying to build a gui that will take an input from the user like so:
start time: 7:29:32 AM
End time: 7:29:51 AM
Then do the following:
calculate the time that has passed in seconds (should be just a row count, data is gathered once a second)
copy the data in the time range from the "Data 3" column in to a variable perform other calculations on the data copied as needed
I am having some trouble figuring out what to do to search the time data and find its location since it imports as text with xlsread. any ideas?
The data looks like this:
Time Data 1 Data 2 Data 3 Data 4 Data 5
7:29:25 AM 0.878556385 0.388400561 0.076890401 0.93335277 0.884750618
7:29:26 AM 0.695838393 0.712762566 0.014814069 0.81264949 0.450303694
7:29:27 AM 0.250846937 0.508617941 0.24802015 0.722457624 0.47119616
7:29:28 AM 0.206189924 0.82970364 0.819163787 0.060932817 0.73455323
7:29:29 AM 0.161844331 0.768214077 0.154097877 0.988201094 0.951520263
7:29:30 AM 0.704242494 0.371877481 0.944482485 0.79207359 0.57390951
7:29:31 AM 0.072028024 0.120263127 0.577396985 0.694153791 0.341824004
7:29:32 AM 0.241817775 0.32573323 0.484644494 0.377938298 0.090122672
7:29:33 AM 0.500962945 0.540808907 0.582958676 0.043377373 0.041274613
7:29:34 AM 0.087742217 0.596508236 0.020250297 0.926901109 0.45960323
7:29:35 AM 0.268222071 0.291034947 0.598887588 0.575571111 0.136424853
7:29:36 AM 0.42880255 0.349597405 0.936733938 0.232128788 0.555528823
7:29:37 AM 0.380425154 0.162002488 0.208550466 0.776866494 0.79340504
7:29:38 AM 0.727940393 0.622546124 0.716007768 0.660480612 0.02463804
7:29:39 AM 0.582772435 0.713406643 0.306544291 0.225257421 0.043552277
7:29:40 AM 0.371156954 0.163821476 0.780515577 0.032460418 0.356949005
7:29:42 AM 0.484167263 0.377878242 0.044189636 0.718147456 0.603177625
7:29:43 AM 0.294017186 0.463360581 0.962296024 0.504029061 0.183131098
7:29:44 AM 0.95635086 0.367849494 0.362230918 0.984421096 0.41587606
7:29:45 AM 0.198645523 0.754955312 0.280338922 0.79706146 0.730373691
7:29:46 AM 0.058483961 0.46774544 0.86783339 0.147418954 0.941713252
7:29:47 AM 0.411193343 0.340857813 0.162066261 0.943124515 0.722124394
7:29:48 AM 0.389312994 0.129281042 0.732723258 0.803458815 0.045824426
7:29:49 AM 0.549633038 0.73956852 0.542532728 0.618321989 0.358525184
7:29:50 AM 0.269925317 0.501399748 0.938234302 0.997577871 0.318813506
7:29:51 AM 0.798825842 0.24038537 0.958224157 0.660124357 0.07469288
7:29:52 AM 0.963581196 0.390150081 0.077448543 0.294604314 0.903519943
7:29:53 AM 0.890540963 0.50284339 0.229976565 0.664538451 0.926438543
7:29:54 AM 0.46951573 0.192568637 0.506730373 0.060557482 0.922857391
7:29:55 AM 0.56552394 0.952136998 0.739438663 0.107518765 0.911045415
7:29:56 AM 0.433149875 0.957190309 0.475811126 0.855705733 0.942255155
and this is the code I am using:
[Data,Text] = xlsread('C:\Users\data.xlsx',2);
IndexStart=strmatch('7:29:29 AM',Text,'exact'); %start time
IndexEnd=strmatch('2:30:29 PM',Text,'exact'); %end time
seconds = IndexEnd-IndexStart;
TestData = Data([IndexStart: IndexEnd],:);
You probably need to:
Use strfind to find the relevant string in the data imported
Use datenum to convert the date to serial date numbers, to be able to calculate the elapsed time between the two points.
It would help if you posted your code so far though.
EDIT based on comments:
Here's what I would do for cycling through the list of start and end times:
[Data,Text] = xlsread('C:\Users\data.xlsx',2);
start_times = {'7:29:29 AM','7:29:35 AM','7:29:44 AM','7:29:49 AM'}; % etc...
end_times = {'2:30:29 PM','2:30:59 PM','2:31:22 PM','2:32:49 PM'}; % etc...
elapsed_time = zeros(length(start_times),1);
TestData = cell(length(start_times),1); % need a cell array because data can/will be of unequal lengths
for k=1:length(start_times)
IndexStart=strmatch(start_times{k},Text,'exact'); %start time
IndexEnd=strmatch(end_times{k},Text,'exact'); %end time
elapsed_time(k) = IndexEnd-IndexStart;
TestData{k} = Data([IndexStart: IndexEnd],:);
end
Use the "Import Data" from the Variable Tag in the Home menu. There you can set how you want the data to be imported like. With or without heading and the format.
I need to plot a 3D bar graph in matlab or excel. I am going to use some dates in x-axis, time in y-axis and some amount on the z-axis. Each record in csv file looks like ...
18-Apr, 21, 139.45
I am not sure how to do this right. can anyone help me please. I tried using pivort chart of excel. however, i could not manipulate the axis and use appropriate space between each tick.
thanks
kaisar
Since the question is lacking details, let me illustrate with an example.
Consider the following code:
%# read file contents: date,time,value
fid = fopen('data.csv','rt');
C = textscan(fid, '%s %s %f', 'Delimiter',',');
fclose(fid);
%# correctly reshape the data, and extract x/y labels
num = 5;
d = reshape(C{1},num,[]); d = d(1,:);
t = reshape(C{2},num,[]); t = t(:,1);
Z = reshape(C{3},num,[]);
%# plot 3D bars
bar3(Z)
xlabel('date'), ylabel('time'), zlabel('value')
set(gca, 'XTickLabel',d, 'YTickLabel',t)
I ran on the following data file:
data.csv
18-Apr,00:00,0.85535
18-Apr,03:00,0.38287
18-Apr,06:00,0.084649
18-Apr,09:00,0.73387
18-Apr,12:00,0.33199
19-Apr,00:00,0.83975
19-Apr,03:00,0.37172
19-Apr,06:00,0.82822
19-Apr,09:00,0.17652
19-Apr,12:00,0.12952
20-Apr,00:00,0.87988
20-Apr,03:00,0.044079
20-Apr,06:00,0.68672
20-Apr,09:00,0.73377
20-Apr,12:00,0.43717
21-Apr,00:00,0.37984
21-Apr,03:00,0.97966
21-Apr,06:00,0.39899
21-Apr,09:00,0.44019
21-Apr,12:00,0.15681
22-Apr,00:00,0.32603
22-Apr,03:00,0.31406
22-Apr,06:00,0.8945
22-Apr,09:00,0.24702
22-Apr,12:00,0.31068
23-Apr,00:00,0.40887
23-Apr,03:00,0.70801
23-Apr,06:00,0.14364
23-Apr,09:00,0.87132
23-Apr,12:00,0.083156
24-Apr,00:00,0.46174
24-Apr,03:00,0.030389
24-Apr,06:00,0.7532
24-Apr,09:00,0.70004
24-Apr,12:00,0.21451
25-Apr,00:00,0.6799
25-Apr,03:00,0.55729
25-Apr,06:00,0.85068
25-Apr,09:00,0.55857
25-Apr,12:00,0.90177
26-Apr,00:00,0.41952
26-Apr,03:00,0.35813
26-Apr,06:00,0.48899
26-Apr,09:00,0.25596
26-Apr,12:00,0.92917
27-Apr,00:00,0.46676
27-Apr,03:00,0.25401
27-Apr,06:00,0.43122
27-Apr,09:00,0.70253
27-Apr,12:00,0.40233
Use MATLAB's CSV reading functions (or write your own) and then use bar3 to display the data.