All articles with 'text processing' Tag
So here is a news from strange but true department. Microsoft Excel blamed for gene study errors [bbc.com].
Microsoft’s Excel has been blamed for errors in academic papers on genomics.
Researchers trying to raise awareness of the issue claim that the spreadsheet software automatically converts the names of certain genes into dates.
Gene symbols like SEPT2 (Septin 2) were found to be altered to “September 2”.
This is what happens when you spend countless hours learning genome sequencing and very little about the software tools where your data goes. May be we need clippy back to warn people about such sticky situations.Continue »
Here is an interesting problem to start your day.
Let’s say you work as DNA sequencing engineer at The Enterprise. And you just unlocked the sequence that is responsible for all male problems. The early onset of baldness. The sequence code is AAAA. And you want to find out how many times this sequence is found in a sample of DNA strings, in the range B6:B19. Essentially you want the above.
So how do you write the formula?Continue »
Okay, time for another challenge.
Imagine you have some data like this. Each cell contains 3 numbers separated by line break – CHAR(10) and you need to extract the number that is 10 digits long.
Go ahead and solve this riddle.Continue »
Here is a quick homework to keep you busy this weekend.
Can you extract number of days from below text.
Nov15 PUTS (23 days)
March15 TIKS (3 days)
March1 TIKS (25 days)
June11 TIKS (10 days)
Assume the data is from cell A1.
Your solution should return the following:
Post your answers (formulas, VBA code or Power Query M code) in the comments.Continue »
Last night I asked members of our Chandoo.org facebook page to share an Excel problem you are struggling with. Francis asked,
How to save a file as .txt in vba without quotes? When I save as .txt, the file has got quotes inside of it. I used the code Print, but it didnt work because the file loses its delimitation.
Does anyone know how to solve this?
Let’s understand how to save a range as text and overcome the double quote problem.Continue »
If you deal with customers or colleagues in Europe, often you may see numbers like this:
When these numbers are pasted in Excel, they become text, because Excel can’t understand them.
Here is a simple way to convert the European numbers to regular ones.
Use NUMBERVALUE() Function.Continue »
We all know that VLOOKUP (and its cousins MATCH, HLOOKUP and LOOKUP) are great for finding information you want. But they are helpless when you want to do a case-sensitive lookup.
So how do we write case sensitive VLOOKUP formulas?
Simple. We can use EXACT formula.Continue »
On Wednesday (15th July), I ran my first ever webinar, on a topic called, “How to be a BETTER Analyst?” (here is the replay link, in case you missed it). It was a huge success. More than 1,100 people attend the live webinar and hundreds more watched the replay. As part of the webinar, we had interactive Q&A. Viewers posted their questions and I replied to as many of them as I can.
After the webinar, I wanted to make sure I covered all the questions. So I downloaded the chat history. There were more than 700 messages in it. And I am not in the mood to read line by line to find-out the questions. A good portion of chat messages were not questions but stuff like ‘hello everyone, I am from Idaho’, ‘Wow, Chandoo has beard!”, “Enjoying a beer in Belgium while watching webinar” etc. So I wanted a quick way to flag the messages as question or not.Continue »
Recently my iPhone 4 crashed. It is 3.5 years old. And just like any other 3 year old, it started acting weird & crazy one night. The next morning it went silent. It won’t go beyond the Apple logo whenever I start it. Since I couldn’t wait for the phone to start, I took out the SIM card (the phone is unlocked, if you are wondering) and placed it in my old Nokia phone. But alas, none of my contacts are on the SIM. They are in “cloud”.
After a day of answering phone calls from everyone including my mom as “Chandoo here”, I’ve decided to get my contacts back. So I logged in to iCloud to download a backup. And the backup was a .VCF file.
Since I wanted to have all my contact numbers in a spreadsheet, I did what any Excel nerd would do. I built a template that can convert VCF data to Excel worksheet.Continue »
Today lets rescue John Doe from John_doe@email.com.
Extract first & last name from email address
Given an email address in the format
You need to extract first name & last name using formulas.Continue »
Ever wondered how to go from a bunch of cells with text to one big combined text? Like shown above.
Well, there is a simple trick. One of our readers, Grant shared this with us. Read on to learn this.Continue »
Few weeks ago, someone asked me “What are the top 10 formulas?” That got me thinking.
While each of us have our own list of favorite, most frequently used formulas, there is no standard list of top 10 formulas for everyone. So, today let me attempt that.
If you want to become a data or business analyst then you must develop good understanding of Excel formulas & become fluent in them.
A good analyst should be familiar with below 10 formulas to begin with.Continue »
Are you ready for an Excel challenge?
Today, your job is very simple. Just find a pattern in a text and return corresponding value.
In a range we have some resource types & their billing rates.
In another range, we have some descriptions. Each description contains a resource type somewhere inside it. We need to retrieve billing rate for each description by looking up which resource type is mentioned in it.
See above diagram.Continue »
The best thing about Excel is that you can do the same thing in several ways. Our yesterdays problem – Extracting file name from full path is no different. There are many different ways to do it, apart from writing a formula. Learn these techniques to be a data extraction ninja.
1. Using find replace
2. Using text to columns
3. Using UDFs
Today lets tackle a very familiar problem. You have a bunch of very long, complicated file names & paths. Your boss wants a list of files extracted from these paths, like below:
Of course nothing is impossible. You just need correct ingredients. I cannot help you with a strong cup of coffee, so go and get it. I will wait…
Back already? well, lets start the formula magic then.Continue »