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CMU-CREATE-Lab / data-visualization-tools

EarthTime, and various data visualization libraries
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Needed: Logic to make basemaps not control timeline when paired with other layer #183

Closed jjkohler closed 3 years ago

jjkohler commented 3 years ago

See examples below

rsargent commented 3 years ago

Normally, the last selected layer (rightmost in the share link) controls the timeline. But layers without timelines don't affect this.

Proposed behavior #3: Layers with single timestamp (begin time = end time) show a year without a timeline. And enforce that animated base layers like landsat pause that at same time.

Proposed behavior #1: Base map timeline always has lower priority than other layer's timeline, even if the base map is later in the share link.

2: If overlay layer has a single time (begin time = end time) e.g. Cropland Extents 2015, display that year by the timeline but without an actual timeline bar+scrubber. This should override basemap timeline too like #1, and would seek the basemap to the closest time representable (e.g. layer is 2000 shows landsat 2000, or layer is 1950 shows landsat 1984).

3. For Forest loss by year 2000-2018 atop landsat, show landsat 2018 and no year at the bottom.

gabrielo commented 3 years ago

Testing URLs 1 Base map timeline always has lower priority than other layer's timeline, even if the base map is later in the share link. https://staging.earthtime.org/explore#v=4.56342,0,0,latLng&t=2.66&ps=50&l=pure_earth_modern_pollution,bdrk&bt=19900101&et=20161231&startDwell=0&endDwell=0

2 Layers with single timestamp (begin time = end time) show a year without a timeline. And enforce that animated base layers like landsat pause that at same time. https://staging.earthtime.org/explore#v=54.9517,-4.52115,4.594,latLng&t=3.57&ps=50&l=uk_eu_referendum_2016,blsat&bt=19840101&et=20191231&startDwell=0&endDwell=0

gabrielo commented 3 years ago

Logic added with commit 145bf078fb546c4eea8edcf0156b25430c1e3f37

Displaying single year and or span of years requires further development.

gabrielo commented 3 years ago

If data visualization layer has a single time (begin time = end time) e.g. Cropland Extents 2015, display that year by the timeline but without an actual timeline bar+scrubber. https://github.com/CMU-CREATE-Lab/data-visualization-tools/issues/194

gabrielo commented 3 years ago

More tests.

A data layer timeline should take precedence over the landsat base map, even if the landsat base map is later in the share link.

jjkohler commented 3 years ago

For further discussion, probably in next week's ET meeting with @pdille @rsargent @gabrielo

Forest Loss by Year https://staging.earthtime.org/explore#v=-6.89408,-12.59708,0.921,latLng&t=3.43&ps=50&l=blsat,fly&bt=19840101&et=20191231&startDwell=0&endDwell=0

Croplands https://staging.earthtime.org/explore#v=34.78126,-86.01422,4.299,latLng&t=3.57&ps=50&l=blsat,cropland&bt=19840101&et=20191231&startDwell=0&endDwell=0

Landsat Advancing only through the 1930s and then stopping https://staging.earthtime.org/explore#v=34.27548,-109.4899,5.912,latLng&t=6.75&ps=50&l=blsat,gm_co2&bt=19000101&et=20111231&startDwell=0&endDwell=0

These tie closely to #184

jjkohler commented 3 years ago

I believe that all the documented cases related to this issue have now been solved. Pending any further issues being identified, this issue can be closed.