Please enable JavaScript.
Coggle requires JavaScript to display documents.
The Five Steps of a GIS Project - Coggle Diagram
The Five Steps of a GIS Project
Step 3: Choose Analysis Methods
& Tools
Using the
questions from step one
,
determine methods and tools
that could be used to answer each question. Then,
diagram
the analysis to break down each output
Look at obvious patterns or trends in the data, such as the
distribution
of your search results in the selected area to see where they are relative to one another.
Symbolize layers or differences in boundaries using
graduated colors
.
Diagram the analysis in a sequence easy to read, simple, and step by step, to be used in the next step of performing the analysis.
Step 5: Examine &
Refine Results
Examine the results
from analysis by looking at the
summary table
to see where each
overlap
in the data occurs and decide its significance by higher or lower values.
Sort the data to determine where there is
more or less of an overlap
between the different datasets
Refine the analysis by looking at
specific variables of interest
in each dataset.
Extend the analysis by looking at where there is less overlap between the data to
determine if a significant relationship is present.
Step 4: Perform
the Analysis
Complete each analysis
from the diagram
. If they are complicated analyses, use ModelBuilder to automate the process. There are different types of
visual analyses
to look at the data.
A
Visual Analysi
s can combine the data into a readable map with a key based on graduated colors in the study area.
Completing a
spatial join
between the two layers of data creates a new layer where all of the features of one layer plus the attributes of the other layer give you more information.
Then, summarize the result with an
output table
that contains detailed statistics where each set of data overlap.
Step 1: Frame The Question
The way someone
frames
a question leads to the number sub-questions that stem from it. The framing of all questions is important in determining the
GIS tools
and
methods
to use for analysis.
What are related
sub-questions
that answering this question depend on?
Make sure all of the sub-questions are related and help answer the high-level question. If not, ask different questions. Think about different GIS tools and methods that can be used to answer all questions.
Determine the
preliminary, high-level question
you are trying to answer.
Step 2: Explore & Prepare Data
Find relevant data
and determine if it will be useful by looking at what is included. Some data examples are spatial, population, or demographic data. Then,
prepare the data
by deciding on a format to use while making sure your analysis tools will accept the format.
Prepare Data
Organize
the data into its own project folder to simplify analysis across different geodatabases
Extract
the data needed for your specific study area to enhance data visualization and speed up processing times. Create a selection layer of the studied area if you are using the same area for multiple analysis projects.
Explore Data
: Look at the feature geography, attributes, and metadata for each dataset to decide if it will be useful for your analysis
Focus on format,
when
it was collected, how
detailed
the data is, whether it has
attributes
you need, and if there are any
constraints