Okay in our programming we have this Bobby accordi data frame data frame is a data structure or the object in this Remy I will see our data frame is important because data frame when we see when we read the CSV or Excel file, he will always be put into this data frame structure. So let's say in our programming how do we create this data frame? So we can create something I say variable one. Okay to data dot frame. Okay we want to create as a column. So I create I say names equal C. Okay, I say can j James okay.
And then Mary Kay then out a second column are the variables will be let's say our salary equals c 1000 2020 thousand. Then I say that Tawana gave me I say, ah, iD iD equal ICRC 123. So Id should be the first one here. Let me see, okay, I pu ID as the first column. Okay. And this is our data frame.
So I want to see a timeframe, I pull out the robo And Ctrl A right okay. So this is how we create and get what data frame we can see cross any type of variable one and type all vailable and Ctrl A and then run okay cross DataFrame then type is a Hardee's the tree as a lease, okay, I want to see number of column then I number of rows number of columns variable one and number of row they will go on okay Ctrl A to run. So, I have a three column three roles. Okay I want to see the structure. These are the top three As the variable one okay Ctrl A and then run okay so the structure of this data frame are ID number name z specter salaries number okay then we can see our Latino so so let's say I want to select these okay I want to select the mec variable one, control a run okay I want to select this column and say I want to select salary I can do something like this variable one salary okay Ctrl A and then run Okay, so I got the salary here Okay, so let's say I want to select the row and the column.
So I can like the matrix I can select a first row, because no one okay? Then Ctrl A, and then I run. Okay, this is a personal, a volunteer solidi column. I can also do something like this. Let's say I want to select the first column Ctrl A and then run. Okay, I get a first column.
If I want to select a value or I want to add a value, I can do something like this as a first row first column first row, first column I want to change it to let's see, ah, any number six, control a run. Okay I want to see the African country run okay now the first this value is now changed to six. Okay? So I can also do r by let's say C by so I can do something like this a variable one will say roll die Okay, that's a matrix variable one okay then I put in this Okay, I will put in let's see, the first one is number so if we see any number, we will One okay I play maybe ah say k RP maybe came to okay then I put in a salary maybe 4000 okay so Ctrl A and then I run okay then I want to see the variable one okay Ctrl A and then run okay see Lee's can two names maybe here I change it to something I see ah can join Hey missy.
Okay.