Talking about dot products in linear algebra can be really a subject of hours, but long story short this is probably the minimal knowledge you can live with: The dot product (inner product) is an operation on 2 vectors that…
Category: VBA \ Excel
VBA is not a scripting language… Not at all!
VBA – Array to Excel Range. With filtered rows.
Excel with VBA is really a powerful tool. There should be some 5 more years, until Python really becomes a standard for the Excel people and I am not sure that it would actually happen that quickly. Anyway, working with…
VBA – Excel Range to Array
In the last weeks, I have noted that one of my answers in StackOverflow has received some upvotes. Which was somehow strange, as people keep on telling me that #VBA is going to die and it is a “funny scripting…
Simplifying Excel Tasks with Python: Data Handling and Testing Tutorial
Working with Python and Excel is actually quite handy, especially if you are into it. In this article, you can see how to create Excel files, write data and formulas into them and read these. Pretty much simple CRUD methods.…
Tagged with: Coding Tutorial, DataAnalysis, DataScience, ExcelAutomation, Openpyxl, Pandas, Python, UnitTesting
Python – Make a simple API with Flask and Postman
Flask is actually really a powerful tool for making an API. In the video below, you would see how quickly I am building an API, that does four really simple functions. The functions are – saying “Hello”, multiplying a number by…
Python Dictionary – Advanced. With YouTube video.
Some time ago, I wrote an article about defaultdict in Python here – vitoshacademy.com/python-defaultdict-object-or-how-to-avoid-the-key-error. Now, I have decided to make a video about it and increase the scope with standard dictionary functions and an advanced class, that checks whether the…
Python – Lambda Expressions – With YouTube Video
As one of the acknoledged reviewers of the Manning book Python How-To, I have decided to make a YouTube video, based on a part of the book, mentioning Lambda Expressions. The video is here, and the code I have used…
MS Word – Connect a connector to a Shape
Have you ever got your connectors in MS Word not in line? Like this one: The good and intended way to do it, was pushed by Microsoft some time ago – go buy yourself MS Visio. But, if you do…
Azure – Quickstart: Deploy a Pyton Flask web app to Azure App Service – With YouTube Video
Following the step-by-step original tutorial here, I have created a simple Azure video tutorial, explaining how to deploy a python flask web app with local git. The idea to have something on your own PC and then simply using this…
VBA – Check if resource or url exists in the internet
If you are one of the many VBA developers, then most probably you have been asked once or twice to download some file from a local eshare or site. Before downloading it, it really makes sense to check, whether this…
VBA – Insert Into String
Inserting into string in Excel should be a trivial task, but it always makes sense to have something prepared in the boilerplate, before you start working. Ok, why is it important to have a nice function, if something like this…
Python – Write a DataFrame or List to multiple tabs in Excel
The idea of the article is to provide a Python code that does the following: Takes a list or DataFrame; Splits it into quite a few smaller parts; Writes each one on a separate Excel worksheet; Pretty much like this:…
VBA – Split worksheet to worksheets, save Excel worksheets to csv
Same article, but for Python is here – https://www.vitoshacademy.com/python-split-worksheet-to-worksheets-save-excel-worksheets-to-csv/ This article does 2 things: Splits one worksheet to multiple worksheets Then goes through the worksheets and saves them as *.CSV files I hope that is enough for you. Ok, so…
VBA – Option Compare (Text || Binary || Database)
Option Compare in VBA is the thing, that will save you ugly stuff like this one:
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Sub Testing() Dim userInput As String userInput = InputBox("What is decimal 4094 in hex?") If UCase(userInput) = UCase("ffe") Then Debug.Print "You have correctly written " + userInput + "!" End If End Sub |
Yup, it is a bit ugly, using UCase to compare all the time, between small letter text and big letter text. So, if you…
VBA – Get Substring Between 2 Substrings – Locate value of Nth XML
Getting N-th string between two substrings might sound a bad idea, until you do not need it. And with VBA, you better have something prepared. So, imagine the following XML (from this article here):
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<FootballInfo> <row> <ID>1</ID> <FirstName>Peter</FirstName> <LastName>The Keeper</LastName> <Club name ="NorthClub"> <ClubCoach>Pesho</ClubCoach> <ClubManager>Partan</ClubManager> <ClubEstablishedOn>1994</ClubEstablishedOn> </Club> <CityID>1</CityID> </row> <row name="Row2"> <ID>2</ID> <FirstName>Ivan</FirstName> <LastName>Mitov</LastName> <Club name = "EastClub"> <ClubCoach>Gosho</ClubCoach> <ClubManager>Goshan</ClubManager> <ClubEstablishedOn>1889</ClubEstablishedOn> </Club> <CityID>2</CityID> </row> </FootballInfo> |
Your task is to get…
Tagged with: between substrings, locate, mid, str, string, string between 2 strings, Substring Between 2 Substrings, VBA, xml
How to get redirect url using Excel VBA or Python
Getting some tiny URL, that redirects you to somewhere else might be dangerous. There are a lot of people, that would never ever click on bit.ly/something or goo.gl/something, just because they do not know where the redirect is going to…
VBA – VLookup with Multiple Criteria in Excel without Excel Formula but with VBA
Ok, the title became too lengthy, but the idea is to try to duplicate the beauty of what this formula does:
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=INDEX(myTable[#All],MATCH(1, (myTable[[#All],[Profit]]=C9)* (myTable[[#All],[Currency]]=D9)* (myTable[[#All],[Value]]=B9),0),1) |
And this is the cell of the formula above: Anyway, the strange thing was that we have beautiful…
Python – Read and Write to Excel ActiveX Textbox
Reading and writing to an Excel ActiveX textbox with Python can be fun. If you really do not have anything better to do. Anyway, if this is your current task, you are on the correct place to see how it…
Python – How to fill Excel cell with image, using python
If you have ever dreamed that it will be possible to fill out an Excel cell with a picture, using Python, then you should probably reevaluate your dreams. Seriously, who dreams of something like that? Without further dreaming, the code…
VBA – Printing Dictionary of a Dictionary of a Dictionary…
Working with dictionaries in VBA is a bit more unpleasant, than working with dictionaries with almost any other language. Because of the VBA IDE, you only see the keys, but not the values. Thus, if you have experience with Visual…
VBA – Automatically Save Excel File with VBA
Saving Excel files, when working with VBA is unfortunately a bit of pain the ass. You always need to make a new version every now and then, because it does not matter how seasoned VBA developer you are, still there…
VBA – Ubound of Multidimensional Array or How to Get What We Need?
Transforming Range to Array in VBA is actually a one liner – we take the range and we assign it to a variant:
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Dim myRange As Range Set myRange = Range("a1").CurrentRegion Dim myArray As Variant myArray = myRange |
The “strange” part is that the array is converted to 2-dimensional array after this: and working…
VBA and Python – Intersection of dictionaries
Intersection of dictionary (or of any two lists) is a list with elements, that are present in both other lists. Thus, if we have the following 3 dictionaries in Python:
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dict_a = dict([('aa', 4139), ('bb', 4127), ('cc', 4098)]) dict_b = dict(aa=4139, bb=4127, ee=4098) dict_c = {'aa':12, 'bb':13, 'dd':23} |
Then, an intersection of their keys will contain only…
VBA – IIF() vs IF()
What is the difference between IIF() and IF() in #VBA? The idea of IIF() is that it evaluates both the True and the False part of the condition, before evaluating the condition itself. Thus, if the False part throws an…
VBA – Hashing in Excel with HMACSHA1
Hashing strings in general is useful. It is one of the good things, that we get from granted by the various .Net libraries and we should not try to do on our own, as the HMACSHA1 is quite a powerful…
VBA – Convert Excel Column Number to Letter and Letter to Column Number
Converting Excel column number to letter and letter to column number is actually something that every VBA developer does at least once a day. The easiest way is probably to use the property .Column or .Address of the range object that…
Excel – Index(Match) based on multiple columns
Everyone knows the feeling that they need to use the =Index(Match(),Match()) formula in Excel and something tiny was not enough to reach their goal. Some time ago I knew that something is missing I was trying to “filter” with the…
How to fix – This workbook contains one or more links that cannot be updated…
Ok, if you are visiting this article, then probably the reason is that you have received the following messagebox upon openning of Excel: And after looking all over your cells, with both VBA and “Find”, you have not found anything…
VBA – Nested Dictionary
Nested dictionary means a dictionary within a dictionary. Some days ago last week I was trying to build one and it took me some solid 15 minutes to do it, thus I have decided that it is worth an article…
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VBA – Make Excel Comments Beautiful
Everyone, who has worked with Excel more than a year knows that the comments are actually quite useful – they allow us to put info data into a cell, without actually putting data in the cell. However, the standard way…