I'm new with vba (i know only R) and I'd need to perform the operation below but i don't know how to do it:
I need to create two distinct lists of numbers, for example: A={2,4,6,8,9} and B={4,6,9} and then I need to create a third variable that contains only the numbers of A that are not in B: C={2,8}.
How can i do that?
Thank you
VBA does not provide a method or structure for doing that. You will need to loop through the collections and test each value against every other value.
You may use a dictionary object or an array (or a spreadsheet) to hold the sets. You may use nested FOR - NEXT loops to loop through the sets.
VBA is a simple and powerful language. A prime reason people use R and python, in spite of their complexities and difficulties, is that VBA is very old language that does not include native methods of handling multi-dimensional sets.
Related
I'm struggling for some time with this problem and I am not able to find any solution on-line. Closest I get is how to write Basic function that can be used in Calc's formula, but since Basic and BeanShell are completely different languages, I can't find the right syntax/procedure to achieve the same functionality in the latter language.
In Writer one can have a table (not the spreadsheet—just ordinary table), where you can press F2 over cell and enter some formula, e.g. =<C2>*<E2> to calculate product of values in C2 and E2 cells.
I wrote BeanShell method String amountInWords(String amount, String currency) which converts passed amount (e.g. 1,234.59) and currency (e.g. "USD") into words (one thousand two hundred thirty four dollars, fifty nine cents). Now I would like to hit F2 over some cell and type formula like =amountInWords(<Table2.D3>, "USD") and to see above mentioned output as the cell content. Unfortunately I get ** Expression is faulty ** message.
Can someone, please, advice me, how to make use of this method in the described manner or alternatively confirm, that this is impossible? Thank you very much in advance!
Writer table formulas are much more limited than spreadsheet formulas. There is a list of supported functions at http://libreoffice-dev.blogspot.com/2019/11/calculations-inside-of-writer-tables.html. AFAIK calling macros is not supported.
Probably what you want instead of a table is to embed a Calc spreadsheet into the Writer document at that location by going to Insert -> Object -> OLE Object. Then rewrite amountInWords as a Basic user-defined function (UDF).
If you must use BeanShell then write a Basic UDF that loads and calls the BeanShell method. Or you could create a BeanShell Calc add-in although that is more difficult, requiring XML configuration files. For add-ins, it may be easier to write in Java rather than BeanShell as there are more examples and documentation available.
Or, instead of embedding a spreadsheet, create a search-and-replace Writer macro in BeanShell that performs any needed calculations in the table. Set the macro to run on an event such as when the document is opened.
At my job, we have several rental properties that we manage. Each one of these properties may go by different names. For example a property may be called Amber Gateway, Platinum Gateway, The Gateway, etc. We have maybe 500-600 Excel workbooks floating around with different types of information in them & I might be asked to pull information from various ones.
The lack of a consistent naming methodology prevents me from using a standard Index/Match function to look up data. I'm not sure if this is the best solution, but this has been my stab at solving the problem.
I've created a worksheet that has a list of all the property names in Column A. Any associated names are listed to the right on the same row in Column B, Column C, and so on. Just for simplicity, say there are only 5 properties and all my data is in A1:E5. Then say the property I'm interested in is in F1 and the property list I want to "match" it up against is in G1:G5. So my data would look something like this:
River Stream Creek Brook Rivulet
Apple Fruit
Rock Boulder Stone Slab
Candy Dessert Sweets
Forest Trees
Given the word 'boulder' and the following list:
Candy
Fruit
Creek
Slab
Forest
my goal is to return the list position of the synonym 'slab' - in this case, 4.
I think I can use the below array formula in place of the Match function. to accomplish this:
{=SUMPRODUCT(--(INDEX(A1:E5,SUMPRODUCT(--(A1:E5=F1)*ROW(A1:E5)),)
=G1:G5)*IF(G1:G5<>"",MATCH(G1:G5,G1:G5,0)))}
Now this formula is a bit unwieldy and I was hoping to translate it into a UDF to make it easier to work with. I'm unfamiliar with VBA though, and after doing a bit of searching, I realized that VBA logic works quite differently than Excel Formula logic. Specifically, I don't think I can use = to force my lookup grid into TRUE/FALSE values in VBA like I do in the SUMPRODUCT functions. Do I have to learn VBA in order to implement this as a UDF or is there another solution? In practice, my lookup grid (A1:E5) will be in an external workbook.
If my attempt is completely off the mark, I'm open to other solutions. I know the Match formula function supports wildcards, but it wouldn't work in the case of dramatically different names, so I was hoping for something more comprehensive.
This is my first time asking a question on here, so please let me know if this belongs in a different area or there's any matter of etiquette I'm overlooking.
I have a hive table with one column being an array of strings. I also have a set of custom UDFs that manipulate individual strings. I would like to make hive execute my custom UDF on each element in an array and then return the result as a modified array.
This seems like a simple requirement, but I wasn't able to find a simple solution for it. I found two possibilities, none of them being simple really:
Do a hive SQL gymnastic with explode and lateral view, then invoke UDF, then aggregate back into array. This seems way too big overkill as I don't see it executing in less than 2 mapreduce jobs (but I could be wrong here).
Implement each of my UDFs as GenericUDF that, is supplied with an array, processes each element in it and returns an array again. This requires a lot more development.
Is there any simple way to do this?
There's no way I know of to do it without either more custom UDF code, or as you say, requiring more MR jobs.
But I would suggest a possible third option - write a GenericUDF that takes two arguments: an array and the class name of another UDF. Instantiate and call the UDF through reflection, pass it everything in the array, and return the resulting array. This might be a bit difficult to write, but at least then you won't have to rewrite all of your existing UDFs, as you mentioned.
I had a question pertaining to the two built in VBA function of .Match and .Intersect. Currently I have 2 1-dimensional arrays that I wish to consolidate information into a new array. I realize I've posted a question about the approach to the problem earlier but this question pertains to which method would be better. Would one way be able to consolidate information into a new array faster than the other? and is one method more reliable than the other as well?
From Excel help
Excel Developer Reference
Application.Intersect Method
Returns a Range object that represents the rectangular intersection of two or more ranges.
Arrays are not ranges, so interset is not applicable to your question as stated.
A more detailed explanation of what you are trying to do, and what form your raw data is in will allow better advice
If you are merging your two arrays in vba, then the .Match function and the .Intersect do not behave the same way because, you won't be able to merge with a Match function, you will only be able to find a value.
Hence, i would say, use intersect method.
If you want a more precise answer, please tell us more precisely what you want to do with your arrays with examples and the code you already built.
Regards,
Max
Intersect is a method for finding the intersection of one or more ranges: it won't work with arrays. It returns the subset range that is the intersection of the range arguments.
Unless your arrays are sorted it would probably be more efficient to just loop compare the arrays than use .MATCH
Can anyone confirm whether or not the SQL:1999 Array type Constructor provides any operations for searching the Array in a WHERE clause?.
As an Example If a table EMPLOYEES had a column
QUALIFICATION VARCHAR(20) ARRAY[10]
containing values such as ARRAY['BSC','MBA']
Does the standard support some way of querying EMPLOYEES to find all Employees with an MBA?
Well, you can always use an element reference (ISO/IEC 9075-2:1999, 6.13 ):
WHERE QUALIFICATION(1) = 'BSC'
OR QUALIFICATION(2) = 'BSC'
...
Of course, the problem is that you need to write a comparison for each possible position.
I am not aware of any operators that allows you to compare a scalar with an array, although I would suppose a DBMS that has native support for ARRAY types ould let you create a function that does the job.
I must say I never had the need for array types - I would typically build a one-to-many detail table, or in rare cases, add multiple columns (yeah - a repeating group. send the relational police to hunt me if you like :)
Would you care to explain why you need to know this, or what problem you are trying to solve with an ARRAY?