Monday, April 28, 2008

Module 9 spatial analyst

This was a difficult one for me. I learned that spatial analyst works really well with raster data to show and analyze data sets. You can create hillshades, slopes, and wieght the importants of the data that you are looking at to calculate new information

It's an awesome tool

Module 9

Wednesday, April 23, 2008

Module 10 Hillshade

Module 10 Slope

Module 10 Aspect

Using the spatial analyst add on, I took a DEM (Digital Elevation Model) of Haywood County and I added the aspect, or direction of the slope to the model. I simplified the slope in this case to North and south slopes to make it a little bit easier to read.

Module 10 Aspect

Practice Quiz 2

I could have taken out the parcel layer on the locater map, but I liked the variation in color, so I kept it. I think it would look good on a blotter.

Practice Quiz 2

This was a lot of fun, very basic clipping and map making

Wednesday, April 2, 2008


Buffers: Buffers can be drawn at a constant distance around every feature or at a distance that varies according to attribute values. If features are close together, their buffers may overlap. You can preserve the overlaps or remove them.

Note: When using the Dissolve ALL Function with a buffer. Buffers created with the dissolve All option form a single feature called a multi part polygon. AKA the attributes go to the standard 4 objectid, shape, distance, shape length


OverLay: When you are interested in combining data sets that overlap, overlaying is the key. You can overlay by intersecting, which preserves the area that is common to both data sets. You can also use a union that preserves everything in both areas

Chapter 11 D

To Create a New Layer

To Create a New Layer: (you could go to selection menu –Set Selectable Layers, then on the Tools toolbar click the icon to ‘Select Features.’ And click on the one you want, then right click on the layer Selection- create layer from selected features.) TADA


Clipping: Clipping trims features in one layer at the boundaries of features in another layer. This lets you work with layers that have a common spatial extent, making it easier to navigate a map.
To Clip a spatial attribute based within a layer you must select that attribute. I first created a new layer.
To Create a New Layer: (you could go to selection menu –Set Selectable Layers, then on the Tools toolbar click the icon to ‘Select Features.’ And click on the one you want, then right click on the layer Selection- create layer from selected features.) TADA
Then go to Arc Toolbox - Extract –Clip – Remember you are Clipping one layer based on another, the input is the layer that will be changed based on the output layer TADA

Chapter 11C

TADA These are my two appended layers

Chapter 11B


Dissolve: A dissolve creates a new data set where features in an input table that have the same value for a specified attribute become a specified feature.
Go to: Arc Toolbox – Generalization – Dissolve – Input Features (the input layer to Dissolve) Then select the attribute you would like to aggregate

Chapter 11A

Using a dissolve I combined data based on similar attributes

Module 6 Part Duo

I thought this moment would never come. It's amazing how much time goes into making the data. It takes a special person.

Module 6 Georeferencing and snapping

Snapping (here we are making a vector layer of trail data)
Are you still with me? Ok, so snapping is a great way to georeference. So, you have your known and unknown data, right? Using the editing tool bar click the drop down to ‘start editing’note: you can only edit one data frame so if given the choice click on the one you want to edit. Using the same drop down set your ‘snapping,’ click on what you want to snap, in our case it is roads and trails. Now you want to use the edit tool to (Task) create a new feature in this case, and here we are tracing along the lines of the trails- The goal here is to make a vector layer of trail data. You can double click when you're finished and the feature will highlight. Then you can go into the attribute table and add data.
Trace tool Will allow you to trace along a feature that is highlighted, exactly copying it
How to highlight a feature click on it with your edit tool

Module 6 Part 2 Georeferencing

Georeferencing Part 2
What kind of coordinate system, what is the map projection, what spatial reference that our data is in? Go to Arc Catalog- file folder- metadata
Or Contents – right click properties- XY Coordinate System You can check out the projection.
Now that the trail map has been georeferenced, the next step is to use it to create a vector layer of the trails complete with attribute information.
So we go to the Bent Creek Folder and Right Click New- New File Geodatabase
Then we need to create a new feature class for the database so we right click on the geodatabase create a new feature class. Here you specify what kind of coordinate system your data is going to be in.

Monday, March 31, 2008

Georeferencing Part 1

Georeferencing Part 1

Georeferencing Part 1
Using the View drop down and going to Toolbars- Georeferencing toolbar. This allows us to assign real world coordinates to our raster data, to a image that does not have real world coordinates, using control points.
Starting in the display window layer of our real world coordinates we ‘fit to display’ our new data to display an overlap. Here we can reference non real world to real world starting with the unknown using control points. You have to use more control points if your map is not very accurate.
We create a world file by Updating Georeferencing

Wednesday, March 19, 2008

Chapter 10

Here I am selection attributes by location, looking for the best spot to place my client's new business. We want it to be close to a business center, and because it's a pricey shop we need it to be in an area with a high density of people with a alot of money. The second picture showsthe final location chosen.

Chapter 9

This map focuses on abandoned pit mines that have high concentrations of heavy metals that could cause concerns about safety. I have identifies these sites based on the actoin required to clean the sites. I have used a 'join' based on the common attribute feild of IDNumber to add more data.

Chapter 8

This was an introduction to selecting by attributes, it's some pretty interesting stuff. So, you are working with a client who is interested in three bedroom houses that are for sale on corner plots. One of the pictures shows all the plots that are for sale selected using a select by location status = y Yes they are for sale

Friday, February 15, 2008

Monday, February 11, 2008

Wednesday, February 6, 2008

Another World

This is the Sinusoidal Projection. It shows relative sizes accurately but distorts shape and direction.

The Cube World

This map plays off of the
Fuller example, except it
uses a cube as a base.

mwrh... yeah it's kind of

A Different World Perspective

This is Fuller's Projection of the Earth. He takes the shape of the Earth, and through a low distortion transformation turns a spherical surface into that of a flat one.

Discussion Questions

Should you define a coordinate system when you don’t know its origin? What kinds of problems could occur?

Walk me though how she narrowed down her search in defining her data for Ohio.

Give me an example of when you would use NAD83 and WTD84 interchangeably and when should you not. Explain.

What is the difference between Coordinate systems and special reference?

Chapter 13 Arc Gis

Monday, February 4, 2008

Chapter 4 Map

This shows a layout view of the area of
disappearance on the Earhart path. We
went into ArcCatalog and dragged the
polygon file on to our World map. Then we
inserted a new data frame using the insert
drop-down, and moved two more shape files
showing the area of disappearance and the
sea floor gradient, and added the flight data.

Wednesday, January 30, 2008

Swine Waste Eastern NC

This map is so good looking, I love it.
I think my biggest challenge in 121
will be constantly coming up with
ideas for what information I want
to portray to the viewer. I struggled
with that in this map, and I think
coming up with ideas that can be
enhanced when thinking about
them spatially will be helpful.

Map 1 Blue Ridge Motel

Map 2 3b

This is a closeup of Earhart's Possible Paths
after she left Papua New Guinea

First Map 3a

This outlines our first map in GIS 111.
We are looking at Earhart's trip around the world.

Thursday, January 24, 2008

Here we go

I'm very excited about this starting GIS class. The more I read about it the more I'm enthralled with the software.

Welcome to Cartography

I seem to be getting a slow start so far. I seem to have deleted my first map lol. I'm working on opening the unzipped files in ArcView , and having a little trouble. It's all coming along, though. Land ho!

Wednesday, January 23, 2008

The Begining

Welcome to my blog spot!

This blog spot is aimed at helping me organize my Geographical Information Systems notes, as I embark on a journey through GIS Intro and Cartography at AB Tech.

A little background, I am a recent UNC Asheville graduate student with a BS in Environmental Management and Policy, Minor in Economics. As a student I worked on many environmental advocacy projects. In my last semester I co-founded and directed the new Student Environmental Center at UNC Asheville, that is now located in the Highsmith Uviversity Union. The center serves to educate the campus community on environmental issues through community-based social marketing, energy conservation and efficiency programs while working with state and local governments to better meet their sustainability goals.

I hope to be a part of the solution to Climate Change with a municipality, government, or private industry, as our choices will affect all life on Earth.