I have to write a code with summarizes a field. I have a data like this
AAA BBB CCC 1
AAA BBB CCC 2
SUM 3
-------------
DDD EEE FFF 3
GGG HHH III 4
SUM 7
-------------
TOTAL 10
So i have to summarize fields SUM into one SUM, but the problem is that those are not two variables, it a one variable, and the code loop trough the table and fills the field SUM called G_SUM, so how to make a total sum, I cannot write sum + sum because it's only one field...
Are you outputting in ALV format? If so, there are built in aggregate functions.
in the field catalog structure, pass do_sum = 'X'.
Also, you need to add a sort structure, and pass subtot = 'X'.
Of course, if your output is simple write statements, you will need to write the code yourself as mentioned in some of the other comments.
Related
I wonder if you can help me to find a solution for the following problem. Given a data frame df1 like this
d1={'L':['aaa','bbb','ccc','aaa','bbb','ddd'],
'w':[1,5,9,13,17,21],
'x':[2,6,10,14,18,22],
'y':[3,7,11,15,19,23],
'z':[4,8,12,16,20,24]}
df1=pd.DataFrame(d1)
and two dictionaries to define grouping over columns and rows
dctRowGroups={'aaa':'A','bbb':'B','ccc':'A','ddd':'B'}
dctColGroups={'w':'ALPHA','x':'BETA','y':'ALPHA','z':'BETA'}
I wanted to aggregate over columns as a first step. Applying
g2=df1.groupby(dctColGroups,axis=1)
g2.sum()
results in
but I wanted to keep the 'L' column for the next step row-wise aggregation, i.e. the result should be a dataframe df2 more like this:
What do I need to code to make this happen?
As a next step, I want to aggregate df2 over the rows using the dctRowGroups dictionary
g3=df2.groupby(dctRowGroups,axis=0)
g3.sum()
to get a final result like this:
In what way can I do all these steps in as few lines of code as possible?
Appreciate your advice on this.
Thanks a lot
Willfried.
You can do:
Firstly create df2 and insert 'L' column by using insert() method:
df2=df1.groupby(dctColGroups,axis=1).sum()
df2.insert(0,'L',df1['L']) #use this only when the order matters
#OR(use anyone of the method either insert or assign)
df2=df2.assign(L=df1['L']) #otherwise use this
Finally use assign() ,map() and groupby() method:
result=df2.assign(L=df2['L'].map(dctRowGroups)).groupby('L').sum()
Outputs:
df2:
L ALPHA BETA
0 aaa 4 6
1 bbb 12 14
2 ccc 20 22
3 aaa 28 30
4 bbb 36 38
5 ddd 44 46
result:
ALPHA BETA
L
A 52 58
B 92 98
i have a Datagrid that stores the number pencils produced each day of the month it looks like this:
Pencil | day 1 | day 2 | day 3 | ... |day 31
Red 0 0 13 0 0
blue 5 1 0 8 0
yellow 0 9 5 0 0
I need to save this data into SQL table but im not sure what's the most efficent way to design the table in SQL.
I was thinking about creating a table in SQL with the fields:
pencilmodel
date
quantity
and then in vb.net making a loop that saves 1 by 1 each cell of the datagrid in to the table, but i dont think this is the best way since i will have like 30 rows and a month has 31 days max so it will be 30*31= 930 times.
Im using VB.net and SQL Server
i would create the table that way (as you suggested):
ID | pencilmodel | ProducedDate | Quantity
1 blue dd-mm-yyyy 7
2 red dd-mm-yyyy 4
3 yellow dd-mm-yyyy 6
also, dont loop and insert each row to database, its not efficient, add it to a dataset first and then update it using DataAdapter.Update or bind a dataset to the datagrid view:
How to: Bind Data to the Windows Forms DataGridView Control
I dont know if this one is relevant but why dont you create a fields based on the date and time? lets say like this in your PC
12/14/2016
You can create a program that will create a field for you everyday for example when the day passes by then add a column look like this.
__________________________________
|12/14/2016|12/15/2016|12/15/2016|
so what will happen is you dont need to loop in DGV you just do your INSERT COMMAND
you just need some modifications and validations in here like
if Date_Has_Been_Changed then
Create Table Add Columns
End If
I have a problem in SAS, I would like to know how can I input several columns in only one column(put everything in a single variable)?
For example, I have 3 columns but I would like to put this 3 columns in only one column.
like this:
1 2 3
1 3 1
3 4 4
output:
1
1
3
2
3
4
3
1
4
I'm assuming you're reading from a file, so use the trailing ## to keep reading variables past the end of the line:
data want;
input a ##;
cards;
1 2 3
1 3 1
3 4 4
;
run;
If the dataset is not big just split it to several small data set with one variable each, then rename all variables to one name and concatenate vertiacally using simple set statement. I am sure there are more elegant solutions than this one and if your data set is big let me know, I will write the actual code needed to perform this action with optimal coding
Excel build-in functions are, at most of the time, effective. However, there are some functions really like implemented half-way and some how dictated their usage. The SUBTOTAL function is one of them.
My data is presented in the following format:
Value Count
100 20
102 3
105 4
102 5
And I want to build a table in this format:
Value Count
100 20
101 0
102 8
103 0
104 0
105 4
I've read this in SO but my situation is a bit differ. Pivot table will be able to give you the subtotals of the values appears in the original data and I don't want to have a loop to insert missing values in the original data (if it is gonna to be a loop over the original data, the loop could use to build the table - which I would prefer to avoid at all)
I have crosstab which has row columns indicating different classes, and then peoples names across the top.
| | Required | Person 1 | Person 2 | Person 3 |
| Class 1 | 8 6 | 1 6 | 3 6 | 4 6 |
| Class 2 | 6 2 | 3 2 | 2 2 | 1 2 |
Each field contains 2 values The first value is the number of hours spent in the class, the second field is the number of hours required for certification.
The Required field id my grand total summary.
In the cross tab expert the fields are defined as follows.
Rows:
Command.descr -> a field containing the class names
Columns:
Command.fullname -> a field containing students full names
Summarized Fields:
Sum of Command.evlength -> summation of all time spent in a given course
Max of #required -> this formula returns the number of required hours based on the course name
I am trying to highlight the field Sum of Command.evlength if it is greater than or equal to the value of Max of #required.
My solution was to perform background formatting. Right-Click on the Sum of Command.evlength field, select Format Field. Click the borders tab, check Background, and enter a formula.
The formula I was using is:
if CurrentFieldValue >= {#required} then color(152, 251, 152) else crNoColor
This is not the correct formula. My crosstab has been placed in the footer, which causes {#required} to contain the last value in the grid which in the above example is 2.
From my research I thought I would have to use GridRowColumnValue(row or column name) to access the value of {#required} in the crosstab, but I could not come up with the correct string to represent it.
Does anyone have a way for me to correctly perform this comparison?
Frustratingly I don't think you can use the highlighting expert to compare to a dynamic value. You could swap the columns round then add the following formulas:
To the max_of_required background colour:
whileprintingrecords;
global numbervar required_hrs := currentfieldvalue;
crNoColor;
To the sum_of_command.evlength background colour:
whileprintingrecords;
global numbervar required_hrs;
if currentfieldvalue >= required_hrs then
crRed
else
crNoColor;
I think there are a few other ways but i'm not as confident with those so start here.