Student Project: Thanks to Aaron
- Go to the start menu, to programs, to ESRI, to ArcView GIS
Version 3.1.
- When you have entered GIS it will ask you to either open an existing
project (which you use if you want to look at data), open a blank project
(you create your own view by drawing things), or open a new view (you open
a project with an existing theme but you are able to add data to it).
- If you will want to add your own data as well as existing themes to a
project, it is best to start with a new view, the most versatile of
the three options. By the way, a theme is information, such as cities or
population, that is put onto a map in layers, like one theme could be the
countries or the world, next you would put on the rivers, the roads, the
cities, the population and so on, and you can check each one on and off as
you like.
- Now that you have a new view, it will ask you if you want to add
data to it. If you do, which most likely you will, you click yes.
Then it will come up with a screen where you are able to select which
theme you want to start with, such as the world, the U.S., Africa, or
another country/continent. Also, you will have to select which type of
them you want to start with, a population one, a political map, a
geographical map, and so on. After you choose this, you click open and on
your GIS screen you will see some sort of map appear.
- Now, if you chose a political map of countries across the world, you
could now add another theme on top of that, such as population density or
cities, by going up to View and selecting Add Theme from the
View column. Then you can go into Esridata and select what type of
theme you would like. This theme will then appear on the sidebar next to
your project. To make the theme appear you just have to click on the
little gray box so that a black check forms in it.
- Repeat this step as many times as you want to add as many themes as you
want.
- If you wish to simply hide the theme from view temporarily, uncheck the
black little check in the gray box on the sidebar where the theme is
located. However, if you wish to delete a them forever from your project,
you highlight the them so that its gray box is bumped up and you go to Edit
and select Delete Themes from the Edit Column.
- To add your own data to a project:
- Go to View and select New Theme from the View Column. You
can then choose what type of theme you want to add. A point is a
dot for a city, volcano, or other spot. A line is just like it
seems, a line for rivers, roads, and other things like that. The last one
is polygon and is used to make shapes.
- It will then ask you to title your theme, so you title it accordingly.
Then your theme will appear on the sidebar next to your project and it
should be checked off and have a little dotted line around it. If this
little dotted line around the theme box exists, it means that you
are in the edit mode and so you can therefore add data to your
project.
- To add a point of your theme to the map or project, you click on
the point tool which is a little black circle. Then pick your point
on the map and click there to add a point. If you want to change the
symbol of your point you can double click on the dot or symbol that
appears on the sidebar next to the little checked box. Then you can choose
what type of coloring you want, such as unique value, graduated color, or
single symbol. If you want to change the appearance of your point double
click on it again after you have already double clicked it into the legend
editor screen. The paintbrush tool changes the color, the shape tool
(magnifying glass) changes the shape and size, that ABC tool is the font
tool, and there are a few other tools you can use to adjust other aspects
of your point.
- Once you have your point on the map, you can move it around by the arrow
tool. Also, if you want to link a data table to your point, you click on
the Open Theme Table tool or go up to the Theme column
and select Table. Then when you open the table, you can type data
into it by selecting the cursor tool, which looks like a little cursor
with an arrow. Then you can enter data on your table.
- To get a new field on your table (a new column) you can go
up to Edit and select Add Field from the Edit column. Then
it will ask you to name your field accordingly, so you do, and then you
set it as String (letters), Number (numbers), Boolean
(formulas), or Date (dates). You can then set the width of your
column. Be sure to choose carefully because you will never get to reset
any of this information for that field, so if you make a mistake, you will
have to delete the field and start over.
- To add a new record (row) on your table, you go up to Edit
and select Add Record from the Edit Column. This will add a
new row on your table for another point’s information. This table will
automatically add a new record for each new point you put on the map.
- Also, when making a table, I suggest that you put only three or four
columns on any one table. To get a new table, you go back to the
project screen, highlight Tables and press New. You can then
title your table. Then the table will appear totally blank and you will
have to add fields and records. On all tables that you plan on linking
you have to have a common column that is the same for all of the tables,
it has to have the same name and data in it, so you can use a column
called ID and identify each point with a number. Then, when you have
two or more tables that you wish to join together you highlight the field
name at the top of the column in gray on one column and then you go to the
next column and highlight that common ID table on that one as well. Make
sure that you have stopped editing or else you will not be able to join
the tables. Then go up to the Table column and select Join.
The two tables should then join together and display the data of both
together.
- One useful tool is the hand, which moves the map or other object
around.
- The two magnifying glasses zoom in and out.
- The i tool identifies objects and points.
- The ruler with a question mark measures distances.
- The little tag labels things.
- The T tool labels things and allows you to insert text boxes.
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