Creating Your First Visualization

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来自 University of California, Davis 的课程

Fundamentals of Visualization with Tableau

2125 个评分

University of California, Davis

Fundamentals of Visualization with Tableau

2125 个评分

课程 1（共 5 门，Specialization Data Visualization with Tableau）

In this first course of the specialization, you will discover just what data visualization is, and how we can use it to better see and understand data. Using Tableau, we’ll examine the fundamental concepts of data visualization and explore the Tableau interface, identifying and applying the various tools Tableau has to offer. By the end of the course you will be able to prepare and import data into Tableau and explain the relationship between data analytics and data visualization. This course is designed for the learner who has never used Tableau before, or who may need a refresher or want to explore Tableau in more depth. No prior technical or analytical background is required. The course will guide you through the steps necessary to create your first visualization story from the beginning based on data context, setting the stage for you to advance to the next course in the Specialization.

从本节课中

Getting Started & Introduction to Data Visualization

Welcome to this first module, where you will begin to discover the power of data visualization. You will define the meaning and purpose of data visualization and explore the various types of data visualization tools, beyond Tableau. You will install Tableau on your own device and create your first visualization.

Introduction to Data Visualization0:47

What is Data Visualization and Why Do We Do It?6:12

Tools for Data Visualization6:07

Installing Tableau2:37

Creating Your First Visualization5:19

与讲师见面

Suk S. Brar, M.B.A.
Lead Business Consultant
Blue Shield of California
Govind Acharya
Principal Analyst
Budget and Institutional Analysis

[MUSIC]

Welcome back.

After all of the preliminaries, it's time for

the fun part, the first visualization we're going to do in this course.

I don't want you to worry about some of the details for now.

We'll delve into those later.

What I want you to do is follow along.

You could always pause it or even go back a little bit if you miss out on something,

but don't worry too much about it.

Just watch and replicate.

From your web browser, go to the URL shown on the screen.

Make sure you type it in exactly as it's written there, otherwise it won't work.

If you need to, feel free to pause the video so

that you can make sure that you have it onscreen before you continue.

Click on the Download Workbook in the upper right-hand side of the website,

as shown in the screen in front of you.

Again, make sure that you have it downloaded fully before continuing so

that we're able to be on the same page.

The file will download.

Depending on your browser setting, you will either be able to open

the file immediately, or you'll have to open it from your saved location.

In either case, make sure you open it in Tableau Public and come back to the video.

Once opening Tableau Public,

I want you to drag the country field away like I'm doing.

I'll show you here a few times so that your screen will look just like mine.

The reason the country field is there in the document is because Tableau Public

won't allow me to save a file without at least a little visualization.

So this is just giving a small visualization so

that you all could download it.

And I want to drag it away so that it's a completely blank slate, and

we could start from there.

Now we'll go very slowly so you can replicate exactly what I'm doing here.

But if I'm going too fast, which sometimes happens,

just hit the pause button on the screen and then you can catch up.

You can even go backwards and see something that you may have missed.

But the goal of this is really just to see how quickly we can actually do

a meaningful visualization with data that we already have.

Okay, now let's do this.

The first thing we're going to do is to set up our map.

I'm grabbing the longitude field with my mouse and dragging it to the column shelf.

Next, I'll grab the latitude field and drag it to the row shelf.

If you make a mistake, just click on the back arrow as seen on the screen.

That undoes the last action that you did.

Again, you're dragging the longitude field to the column shelf and

the latitude to the rows shelf.

Drag the country field and drop it over the map.

To do this, click on the country field and hold the left mouse button down,

drag it over, and just let go of the mouse button.

Look for the folder that says development.

Click on the folder and expand the options as I'm doing.

Select the CO2 emissions field.

Drag it and drop it on the color button, as I'm doing here.

On my screen, it seems to show that the higher the CO2 emissions,

the greener the color.

That doesn't make sense, since CO2 is a type of pollution.

So we need to change the color of the map, for sure.

To edit the color, I'm going to just click on color and edit

the color to an orange color range instead of the green that I have on my screen.

Now I'm going to add a filter.

Let's do a filter on years so that we can highlight specific years

instead of showing all the years In one map.

What you do is you right-click on years and say show filter.

Then you go all the way to the right-hand side,

you click on the little arrow, and then select the single value list so

that we can see the years and how things change from year to year.

We're going to be using this dataset a fair bit in our exploration of data

visualization.

This first example is just a taste of what we will see.

It'll be exciting to see all of the different ways we can look at the data to

allows us to answer questions and discover interesting insights.

And we'll be doing this for the next several classes, so stay tuned.

And we're going to do even more advanced visualizations,

more advanced dashboards, more advanced story boards.

So stay tuned.

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