### week of 20 April 2021

Class Schedule

Basics | sessions 01-03
1. 19 Jan intro and clients | lecture | labs
2. 26 Jan servers and command line | lecture | labs
3. 02 Feb networks and protocols | lecture | labs
Web Development | sessions 04-08

1. 09 Feb structural layer | lecture | labs
2. 16 Feb presentational layer | lecture | labs
3. 23 Feb using a structure | lecture | labs
4. 02 Mar behavioral layer | lecture | labs
5. 09 Mar design thoughts | lecture | labs
Dealing with Markup | sessions 09-10
1. 16 Mar control objects and display | lecture | labs
2. 23 Mar tools that read markup | lecture | labs
Working with data | sessions 11-14
1. 30 Mar formulas, functions, vectors | lecture | labs
2. 06 Apr data display | lecture | labs
3. 13 Apr manipulate data sets | lecture | labs
4. 20 Apr relational data bases | lecture | labs
Presentations | sessions 15-16
1. 27 Apr designing a presentation | lecture | labs
2. 04 May delivering a presentation | lecture | labs

VLOOKUP is an Excel function to lookup and retrieve data from a specific column in table.
It is an Excel way to do what SQL can do with a relational database.

#### What is VLOOKUP?

It's an Excel function that one may use when one needs to find things in a table or a range by row. For example, look up a price of an automotive part by the part number, or find an employee name based on their employee ID.

In its simplest form, the VLOOKUP function says:

=VLOOKUP(What you want to look up, where you want to look for it, the column number in the range containing the value to return, return an Approximate or Exact match – indicated as 1/TRUE, or 0/FALSE).

#### We will demonstrate practice with the VLOOKUP function

In this workbook, composed of two worksheets, we want to use a lookup table on the 11-Calendars worksheet to populate data in column D on 12-Spring 2021 Class Schedule worksheet

1. select cell D2 on the 12-Spring 2021 Class Schedule
2. in the formula bar, insert this formula
(use your CNTL+C or CMD+C to copy it from this web page, and your CNTL+V or CMD+V to paste it in the cell)
=VLOOKUP(E2,'11-Calendars'!\$F\$4:\$G\$11,2,FALSE)

This means

• the value in this cell equals
• the value you will find when you use this function to
• compare the value in the same line and one cell to the right on this worksheet,
• to the values in the array of cells on the 11-Calendars worksheet in the absolute range of cells from cell F4 through G11,
• where it will look for a value that matches the value in cell E2 in this worksheet in absolute locations \$F\$4 through \$F\$11 on the Calendars worksheet,
• and find the value that resides in the absolute locations \$G\$4 through \$G\$11 on the 11-Calendars worksheet,
• E2 on the 12-Spring 2021 Class Schedule worksheet is a vector, a relative location. When you drag down the value in the cell, the vector in the function will continue to look for values in cells in column E and one cell to the right of the function
• The \$ before the column and row in the value locks the cells on the 11-Calendars worksheet that the VLookup will use to populate the cells that contain the function
• Without the \$, the values would be vectors; with them the values remain in the range of cells you want to use
• and insert that value back into this cell

Once you have the value in cell D2, you can use the fill handle and drag down the function from D2 to D84. The function will continue to match the value in the relative column E cell to the absolute values in cells F4 through F11 on the 11-Calendars worksheet and return the related value from cells G4 through G11 and place them in cells D2 through as far as you drag down the function.

Note, when using the fill handle, you drag down all the cell, to include the color formatting of the cell as well as the function within the cell.