The app updates are very slow because of the volumetry of heat raster layers.
In order to improve the performances, many options need to be tested:

• Hide the layer by default
• reduce the spatial resolution
• use geemap to visualize the ratsers

o On the map, replace the current Population exposure layer with a new layer “Exposed population” layer that displays the population count masked to include only the areas with above threshold temperature. But default only have this layer turned on. This is the simplest way I can think of to have a layer that includes information about both the amount of population exposed to high hazard and the locations of those high exposures.

Objectives:
Generate automatically a text synthesizing the main take away for the amenity exposure outputs

Outputs

• Add a tab containing a text with the main indicators on amenity exposure in each city

o Population Summary tab should be rewritten and reference a particular population category:
 E.g. “75 % of all residential population in PHL-Makati are situated in areas with extreme temperatures above 38 °C. (“All” could be replaced by other population categories depending on what is selected in the category menu).

Collect and integrate administrative boundaries of data portal pilot cities: Tópaga, Vitacura, Accra, Makati, Hobart

As a city I need to visualize the city administrative boundaries layer in the map.

As a city I need to be able to show/hide exposed/not exposed amenities by the mean of a checkbox.

The definition of exposed/not exposed should be based on the defined threshold in slider filter.

The checkbox has an impact only on the visualization of amenities in the map

Make the narrative summary values reactive to slider input

Objectives
Integrate the hazards outputs in the exposure dashboard

Integration process

Objective
Integrate flood hazards (based on aqueduct data source) for assessing amenity exposure to flooding

Output

• Add flood hazard in the Hazard filter
• Generate of amenity exposure to flood statsistics
• Generate amenity exposure to flood map
• Aggregate amenity exposure to flood by sector
• Generate sector exposure table
• Generate sector exposure barchart

• We can remove the option to switch between basemaps and just provide OSM.

Retitle page/tool to be “City Climate Hazard Exposure Tool”

Document the methodology used for producing population exposure classes:

• data sources
• exposure classification

Add information in the legend stating the meaning of the 3 classes: Low, moderate, High

• “Observations” should be retitled to “Amenity Sector Details”

As a city I need that the colors presenting amenity exposure to heat indicator correspond to a linear gradient from Blue to Red.

Since the indicator refer to the deviation ratio of each amenity from the defined threshold, the values from 0 to 100% should be presented in [blue, cyan, green] gradient and those higher than 100% presented in [green, yellow, red] gradient.

• The word “your” can be removed from all input box titles.

Update narrative summary of amenity exposure by stating: x% of assets are located in area of above median heat (median heat value).

• Rename “Amenity exposure” tab with the map to “Site Exposure” (“Amenity exposure” should remain the title on the tab at the top)

When I change the value of the slider, it automatically moves to the by default value

As a city I need that the descriptive statistics presented in the table update based on the defined threshold in the slider.

o Retitle “Population exposure map” to “Residential exposure”, “Population categories’ exposure” to “Category exposure” and “Narrative Summary” to “Population Summary”

Change the position of the main indicators in the filter tab by putting them above the slider component

When we select a new city in the dashboard, the deviation from average amenity heat is not updated because the value is fixed at the top of the app (line 37-38).

The variable "heat_dev_from_amenities" should be computed after subsetting data once the filtes are selected.

Objective
Integrate flood hazards (based on aqueduct data source) for assessing population exposure to flooding

Output

• Add flood hazard in the Hazard filter
• Generate of population exposure to flood statistics
• Generate population exposure to flood map
• Aggregate population exposure to flood by group of population

As a city I need to visualize different attributes relative the presented amenities in the map such as: amenity name, sector, type, exposure level, heat level.

Objectives:
Providing population exposure indicators for all the 5 pilot cities

Outputs

• collect population data for all cities
• compute population exposure indicators for all cities

Add information in the legend stating the meaning of the 3 classes: Low, moderate, High

• Narrative Summary for amenities section should be rewritten:
  o Retitled to “Amenity Summary”
  o E.g. “In PHL-Makati, 56.5 % of sites of the selected amenity sector(s) are situated in areas with extreme temperatures above 38 °C.”
  o E.g. “The most heat exposed sectors are Emergency Services and Waste management with 75 % and 73 % of sites, respectively, exposed to heat above this temperature.”
  o Also, if I customize the heat threshold the temperature text (e.g. “38 °C.”) does not change in the narrative summary. It should be fixed so that this value updates like the other blue values do.

Explore density maps and dots plotting to visualize the population exposure layers

• All maps need legends with units. E.g. “Land Surface Temperature (°C)”, “Population count (per km2)“

As a city I want to define specific threshold to use in order to identify the exposure level of amenities to Heat. The values presented in the slider should correspond on the distribution of the indicator within the selected city:

• Min = Min(LST) for the selected city
• Max = Max(LST) for the selected city
• Values: Percentiles(LST) for the selected city
• Values shown: [0, 10%, 20%.....90%]

By default, the slider is set at the median value if the indicator (50%)

o “Percent of exposed population” should not be on the left hand, but rather only on Population Summary tab. Instead there we should show “Average temperature for median resident (selected category)” in °C.

As a city I need that the sector exposure comparison (presented in the bar chart) updates based on the selected threshold in the slider.

Collect and store the administrative boundaries of the city of Makati

• Delete “Selected amenities heat deviation ratio from all amenities:” and just list the % value as another line after the °C value (in parenthesis and with a forced + or minus in front)