Thank you for your contribution. You submitted a much better changeset comment here and the scope of your edits is restricted to the mentioned feature. A welcome improvement.---You are generally correctly identifying power towers, but sometimes they could be more accurately positioned.
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#REVIEWED_GOOD #OSMCHA
Published using OSMCha: https://osmcha.org/changesets/170365696

When mapping buildings, please trace the shape accurately. Accurate building footpritns aid population estimates and prevent issues like data overlaps. Zoom in so that you can see the outline of the building and mark the corners carefully. Exclude shadows and yards when tracing the footprint. Keep in mind that you are looking at the roofs of buildings, but mapping their footprints. Depending on how the scene is lit, pitched roofs may have light and dark sections that belong to one building. Generally pitched roofs overhang the walls of a building, so a footprint slightly smaller than the roof is accurate. You can scale selected features in ID with shift+(-/+), or JOSM with ctrl.+alt+Lclick & drag. Take care to make contributions that others can build upon. Please keep this feedback in mind when contributing in future. Thank you for your contribution. I recommend that you attend a mapathon. You can find events here https://osmcal.org/
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#REVIEWED_BAD #OSMCHA
Published using OSMCha: https://osmcha.org/changesets/135114765

Hi, please make your changesets informative for other users. If you are doing lots of similar edits then write a few good changeset comments and simply select them from the drop down menu where you write comments after clicking save. Adding features in this case is inaccurate and very non-descript.--- I flagged some highway railway crossings I think you resolved incorrectly by tagging parts of the highway as a tunnel when infact the railway crosses the highway via a bridge. It's possible to know this because the of the shadows cast by the bridges and becasue support structures for a bridge under construction are visible just north of the northern tunnel you added. see bridge=* --- Please keep this feedback in mind when contributing in future. Thank you for your contribution. If you want to experience the OSM community or to get timely feedback from other mappers; I recommend that you attend a mapathon. You can find events here https://osmcal.org/
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#REVIEWED_BAD #OSMCHA
Published using OSMCha: https://osmcha.org/changesets/170364429

See how I mapped this area in https://osmcha.org/changesets/170364877
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#REVIEWED_GOOD #OSMCHA
Published using OSMCha: https://osmcha.org/changesets/135375874

All footprints here are valid and appropriately squared. Generally they are accurate but sometimes you included the shadow of the building in the size of the footpritns. When mapping buildings, please trace the shape accurately. Accurate building footpritns aid population estimates and prevent issues like data overlaps. Zoom in so that you can see the outline of the building and mark the corners carefully. Exclude shadows and yards when tracing the footprint. Keep in mind that you are looking at the roofs of buildings, but mapping their footprints. Depending on how the scene is lit, pitched roofs may have light and dark sections that belong to one building. Generally pitched roofs overhang the walls of a building, so a footprint slightly smaller than the roof is accurate. You can scale selected features in ID with shift+(-/+), or JOSM with ctrl.+alt+Lclick & drag. Take care to make contributions that others can build upon. Thank you for your contribution.
---
#REVIEWED_GOOD #OSMCHA
Published using OSMCha: https://osmcha.org/changesets/135375874

Hi, the Nothern 5 footprints map sections of 1 building which has some grey/white and some teal coloured parts of its roof. It's possible to know this is the case by looking at the shadows. Lets assume that what you mapped is the ground truth, look at the shodows cast NW by the buildings. Why would the middle building not be overcast by the shadows cast by the buildings to its south?--- You also did not position the footprints accurately. In this case the Southern and Eastern walls of buildings can be seen and the footprint should be moved to the base of the building to position them accurately at ground level. Think about the leaning tower of Pisa as a mental aid and watch this video. (https://youtu.be/JAPiGntG6fs). Please keep this feedback in mind when contributing in future. Thank you for your contribution. If you want to experience the OSM community or to get timely feedback from other mappers; I recommend that you attend a mapathon. You can find events here https://osmcal.org/
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#REVIEWED_BAD #OSMCHA
Published using OSMCha: https://osmcha.org/changesets/164261563

You envelped multiple buildings with one footprint here. Each footpritnt should represent one building. Please keep this feedback in mind when contributing in future. Thank you for your contribution. If you want to experience the OSM community or to get timely feedback from other mappers; I recommend that you attend a mapathon. You can find events here https://osmcal.org/
---
#REVIEWED_BAD #OSMCHA
Published using OSMCha: https://osmcha.org/changesets/159921029

When mapping buildings, please trace the shape accurately. Accurate building footpritns aid population estimates and prevent issues like data overlaps. Zoom in so that you can see the outline of the building and mark the corners carefully. Exclude shadows and yards when tracing the footprint. Keep in mind that you are looking at the roofs of buildings, but mapping their footprints. Depending on how the scene is lit, pitched roofs may have light and dark sections that belong to one building. Generally pitched roofs overhang the walls of a building, so a footprint slightly smaller than the roof is accurate. You can scale selected features in ID with shift+(-/+), or JOSM with ctrl.+alt+Lclick & drag. Take care to make contributions that others can build upon. Please keep this feedback in mind when contributing in future. Thank you for your contribution. I recommend that you attend a mapathon. You can find events here https://osmcal.org/
---
#REVIEWED_BAD #OSMCHA
Published using OSMCha: https://osmcha.org/changesets/159885678

When mapping buildings, please trace the shape accurately. Accurate building footpritns aid population estimates and prevent issues like data overlaps. Zoom in so that you can see the outline of the building and mark the corners carefully. Exclude shadows and yards when tracing the footprint. Keep in mind that you are looking at the roofs of buildings, but mapping their footprints. Depending on how the scene is lit, pitched roofs may have light and dark sections that belong to one building. Generally pitched roofs overhang the walls of a building, so a footprint slightly smaller than the roof is accurate. You can scale selected features in ID with shift+(-/+), or JOSM with ctrl.+alt+Lclick & drag. Take care to make contributions that others can build upon. Please keep this feedback in mind when contributing in future. Thank you for your contribution. I recommend that you attend a mapathon. You can find events here https://osmcal.org/
---
#REVIEWED_BAD #OSMCHA
Published using OSMCha: https://osmcha.org/changesets/133512022

Generally these footpritns are valid and appropriately squared but they could be more accurate becuse they often include the shadow in the footpritn's shape and size. When mapping buildings, please trace the shape accurately. Accurate building footpritns aid population estimates and prevent issues like data overlaps. Zoom in so that you can see the outline of the building and mark the corners carefully. Exclude shadows and yards when tracing the footprint.
Thank you for your contribution. If you want to experience the OSM community or to get timely feedback from other mappers; I recommend that you attend a mapathon. You can find events here https://osmcal.org/
---
#REVIEWED_GOOD #OSMCHA
Published using OSMCha: https://osmcha.org/changesets/135113927

Looks like you tried to account for the angle at which the imagery was captured by moving the footprints you mapped here to the base of the buildings. On some occations you did this quite accurately but other footpritns could have been more accurately positioned. In this case since the Western walls are visible and the shadows are cast NW you can use the contrast of the shadow and wall, and ride the corner of footpritns down the edge where two walls of a building meet. You can right click and move features or press m to move selected features without having to hold left click while moving your mouse. ESRI would have been a good secondary source because it is closer to a vertical photo.
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Published using OSMCha: https://osmcha.org/changesets/170193628

Good choice to use ESRI here because the angle at which it was taken makes it easier to map accurate building footpritns. I recommend you use multiple sources to aid your interpretation. e.g. select Bing then ESRI via the background panel (b). You can then use the shortcut Ctrl+b to toggle between the last selected layer. All but one of footprints here have been appropriately squared. Hope this helps.
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Published using OSMCha: https://osmcha.org/changesets/170167014

Valid data, place node is in a good location, and the residental area is quite well mapped. Thank you for your contribution. If you want to experience the OSM community or to get timely feedback from other mappers; I recommend that you attend a mapathon. You can find events here https://osmcal.org/
---
#REVIEWED_GOOD #OSMCHA
Published using OSMCha: https://osmcha.org/changesets/170076434

Again these are not isolated dwellings. In this case I decided to delete some of the place nodes and modified another to a value of hamlet to represent them all. See how I mapped this in https://osmcha.org/changesets/170180665 --- Please keep this feedback in mind when contributing in future. Thank you for your contribution. If you want to experience the OSM community or to get timely feedback from other mappers; I recommend that you attend a mapathon. You can find events here https://osmcal.org/
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#REVIEWED_BAD #OSMCHA
Published using OSMCha: https://osmcha.org/changesets/170076597

There are too many settlements added in close proximity here than are justifed by the imagery sources used to map them. Sometimes seperate settlements can be close to one another, but usually if someone could walk form one to another in a few minutes then they're likely part of the same settlement. I deleted the excess settlements here. Please keep this feedback in mind when contributing in future. Thank you for your contribution. If you want to experience the OSM community or to get timely feedback from other mappers; I recommend that you attend a mapathon. You can find events here https://osmcal.org/
---
#REVIEWED_BAD #OSMCHA
Published using OSMCha: https://osmcha.org/changesets/168398412

I agree with your decision to not include the buildings in the SW in the residential area mapped here, but they by definition do not constitute an isolated dwelling becuase they are only ~60 m from a settlement. Likely they are a part of the same settlement or perhaps a farmyard or something like that. If you want to add buildings that don't warrant a resiential area I recommend just mapping their footprints. I deleted the isolated dwelling in Changeset: 170179919. Please keep this feedback in mind when contributing in future. Thank you for your contribution. If you want to experience the OSM community or to get timely feedback from other mappers; I recommend that you attend a mapathon. You can find events here https://osmcal.org/
---
#REVIEWED_BAD #OSMCHA
Published using OSMCha: https://osmcha.org/changesets/170076858

A valid residential area. Personally I include the yards and likely residential land within residential areas; not just the buildings. You can see my interpretation in https://osmcha.org/changesets/170174027 --- Thank you for your contribution. If you want to experience the OSM community or to get timely feedback from other mappers; I recommend that you attend a mapathon. You can find events here https://osmcal.org/
---
#REVIEWED_GOOD #OSMCHA
Published using OSMCha: https://osmcha.org/changesets/170076887

Most of the footpritns here are oversized and include the building's shadow in the footprint size. The Eastern most footprint only represents only the dark portion of a building's roof. --- When mapping buildings, please trace the shape accurately. Accurate building footpritns aid population estimates and prevent issues like data overlaps. Zoom in so that you can see the outline of the building and mark the corners carefully. Exclude shadows and yards when tracing the footprint. Keep in mind that you are looking at the roofs of buildings, but mapping their footprints. Depending on how the scene is lit, pitched roofs may have light and dark sections that belong to one building. Generally pitched roofs overhang the walls of a building, so a footprint slightly smaller than the roof is accurate. You can scale selected features in ID with shift+(-/+), or JOSM with ctrl.+alt+Lclick & drag. Take care to make contributions that others can build upon.
---
#REVIEWED_BAD #OSMCHA
Published using OSMCha: https://osmcha.org/changesets/170166508

The buildings you added here represent buildings in imagery but are not always accurate in shape and are not accurately positioned because they need to be moved to the base of the buildings. Watch this video to see how to position building footprints correctly when the imagery looks like this https://youtu.be/JAPiGntG6fs?feature=shared&t=82 --- Do not move POIs if you do not know that you are improving the accuracy of their location. It appears to me that you moved a hospital to a car park. You can filter out map data such as POIs when mapping via the map data panel (u). Don't worry I moved these POIs back to their original locations in https://osmcha.org/changesets/170170448 --- Please keep this feedback in mind when contributing in future. Thank you for your contribution. If you want to experience the OSM community or to get timely feedback from other mappers; I recommend that you attend a mapathon. You can find events here https://osmcal.org/
---
#REVIEWED_BAD #OSMCHA
Published using OSMCha: https://osmcha.org/changesets/170121470

Thanks for your informative reply. ---
While it's good to resolve data quality issues, JOSM is a tool and the key is to understand it. Warnings simply indicate possible probelms but the program is not omnicient i.e. it cannot always know with certainty if there is in fact a problem, what it's cause is, and whether you are able to resovle it. JOSM does not prevent uploads contating features with errors or warnings for good reasons e.g. its checks are not perfect and you may have simply edited a feature which already had a problem uploaded by someone else like a tagging warning but you wanted to improve/update geometry. Blindly resolving warnings in the ID editor for example leads to contributors adding invalid layer tags instead of addressing poor geometry which caused overlapping data. If you do not know how or cannot resolve an error I recommend leaving it so that any potential issues are more visible to others, making them easier to spot and address. --- Sometimes warnings appear becuase new tagging has been adopted and tools like JOSM haven't been updated to reflect that.

As a first port of call consult the OSM wiki map features page for tagging releated queires osm.wiki/Map_features --- Use ctrl+f then search for key words and the contents page to find what you're looking for.