GEOG 181-Lab 7 (1)
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School
University of Waterloo *
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Course
181
Subject
Geography
Date
Dec 6, 2023
Type
Pages
5
Uploaded by CaptainBoulderMouse32
Likhitha Tananki ~ 21012570
November 7th 2023
GEOG 181-Lab 7
Tasks
1.
Use the qgis2web plugin to create a web map based on the choroClassEx.qpz
provided in the life expectancy folder in the a7data.zip. Using QGIS, modify the
classification and styling as you see fit and hide any unnecessary attributes. Use
the qgis2web plugin to export the qgis project to a web map (be sure to try the
various options under the Appearance section of the Export to web map dialogue).
Find the location of the exported folder on your computer and open the index.html
file in a web browser on your computer. Take two screenshots of your web map
that highlight the capabilities of the web map and include them in your
assignment document. In addition to the two screenshots, include a short
discussion that answers the following questions:
a.
Which appearance options did you enable and why?
I enabled the following appearance options, Collapsed layer list, Highlight on hover, Layer
search, Show pop-ups on hover, and In-line labels. Doing this allows the map user to use the
map to the fullest extent. Enabling these appearance options makes the map more user-friendly
and accessible, enhancing the overall user experience. Users can interact with the map more
effectively, find the information they need, and gain a better understanding of the geographic
data
presented.
These
options
are
particularly
useful
in
making
GIS
applications
more
user-friendly and informative, benefiting a wide range of users from various backgrounds and
purposes, whether it's for navigation, research, analysis, or simply exploring geographic data.
b.
Discuss any limitations or differences between your QGIS map and your
exported web map. (10 marks)
Web maps, when exported and deployed on the internet, can provide a higher level of
interactivity compared to static QGIS maps. Users can zoom in, pan, click on features for more
information, and perform other actions on a web map. QGIS maps are typically static unless you
create interactive features using additional web development tools. Additionally, exported web
maps are much more user-friendly and simple. Exported web maps may have performance
differences compared to QGIS maps. Depending on the complexity of the map and the server
infrastructure, web maps may experience latency in loading and rendering, especially when
dealing with large datasets. While web maps have their advantages, QGIS has the ability to
have the entire dataset and alter the data set according to the wishes of the user.
It's important to choose the right tool or approach based on your project's objectives and target
audience. If your goal is to provide a user-friendly, interactive experience to a broad audience, a
web map may be a better choice. However, if you need more extensive data manipulation and
analysis capabilities, QGIS offers greater flexibility.
2.
Using the data provided with Assignment 1 (and provided again in the a7data.zip),
experiment with scale-dependent visibility and styling to create an effective web
map. Set up your map so that it shows appropriate information when viewed at
different scales (i.e., city-level detail, neighbourhood-level detail, and street-level
detail). Your map should show minimal features at the scale of the entire city, but
as much detail as possible when viewed at the scale of individual streets within
heritage districts). Experiment with the various qgis2web export/appearance
options. Export your web map and open it in your web browser on your local
computer. Take screenshots showing your web map at three different scales. In
addition to the three screenshots, include a short discussion that addresses the
following questions/topics:
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a.
Which appearance options did you enable?
I enabled the following appearance options, collapsed layer list and layer search. Doing this
allows the map user to use the map to the fullest extent.
b.
Do you find these options to be useful?
These options are particularly helpful when dealing with extensive or complex datasets,
ensuring that users can fully utilize the map's capabilities while maintaining a clean and
organized interface. By enabling these appearance options, you're enhancing the user's ability
to interact with and extract valuable information from the map, which can contribute to a more
user-friendly and efficient map experience.
c.
At what scales did you switch layer visibility from city-level to
neighbourhood-level, to street-Level?
City-Level 1:100000
Neighbourhood Level 1:50000
Street-Level - 1:10000
d.
Provide a list of which layers you included in each scale range along with
any Query Builder expressions you used to limit features shown in any of
these layers.
City-Level 1:100000
Major Roads, Parks, Heritage Districts, Municipal Boundary
Neighbourhood Level 1:50000
Major Roads, Parks, Heritage Districts, Municipal Boundary
All Roads, Waterbodies
Street-Level - 1:10000
Major Roads, Parks, Heritage Districts, Municipal Boundary
All Roads, Waterbodies
Railway Lines, Trails, Tree, Buildings
Query builder Expression for Roads:
"SUBCATEGOR" in ('HIGHWAY','MAJOR')
e.
Discuss any limitations that you noticed with the web map that you
exported. (15 marks)
Exported web maps on the internet offer higher interactivity with features like zooming, panning,
and info clicks, while QGIS maps are often static unless you add interactivity through web
development. Web maps are user-friendly but may have performance issues. QGIS allows
extensive data manipulation.
In this particular case, there was extensive data, as such adding appearance tools such as
highlighting when hovering and hovering pop-ups proved counterintuitive. As such, those helpful
features were left out, in lieu of providing extra data.