Why did you delete the existing residential area here?
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#REVIEWED_GOOD #OSMCHA
Published using OSMCha: https://osmcha.org/changesets/172021440

Hi, The vast majority of footprints represent buildings. Some footprints could be slightly shorter. Use the shadow to inform the size and shape of footprints you map. --- The arrow-head footprint is inaccurate, becasue you traced the roof instead of using it to inform you mapping of the footprint. See osm.wiki/Roof_modelling#Typical_errors_in_the_interpretation_of_roof_geometry_from_aerial_images --- 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_GOOD #OSMCHA
Published using OSMCha: https://osmcha.org/changesets/171986971

I forgive you😉 I've made mistakes when contributing and will continue to do so; it's impossible not to.

I had a look at your more recent contributions and the building footprint accuracy is greatly improved; thank you very much for applying the feedback and improving your mapping!

All's good, I restored the original footprints to the database. I was just curious as to your rationale, so I could consider it when providing feedback.

Hi, The building footprints you mapped here all represent buildings visible in imagery and are very accurate. You created some shared nodes with a river bank when adding them: hold alt in ID to prevent this. --- Please do not connect the corners of buildings to other buildings or features such as highways or residential areas. In the iD Editor, hold down the `Alt` key to prevent your cursor from snapping to existing data and accidentally creating shared(grey) nodes. This [video about connected nodes](https://youtu.be/ltn1VOiq5_0) has more information and a guide. --- 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_GOOD #OSMCHA
Published using OSMCha: https://osmcha.org/changesets/172022840

Hi Alice, the vast majority of footprints here represent buildings, though most of the circular footprints actually represent vegetation i.e. bushes and trees, due to their colour. Zooming in and out tends to aid imagery interpretation.

The NW circular footprint looks like it should be square.

It looks like you mapped the building footprints smaller than the roof, which I recommend when mapping buildings with pitched roofs to account for roof overhang and reduce the likelihood of data overlaps, however some of the footprints are otherwise not as accurate as the imagery allows them to be in for instance, orientation, aspect ratio and position.

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](roof:shape=*#Roof_shape), 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.

I hope this is informative. Happy mapping. 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/

Hi, it looks like you mapped this footprint based on only one half of a pitched roof and did not appropriately square the footprint. Please read osm.wiki/Roof_modelling#Typical_errors_in_the_interpretation_of_roof_geometry_from_aerial_images and see how I mapped it in https://osmcha.org/changesets/171940618 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/171938673

This is generally a high quality contribution. There are some minor inaccuracies here and there, but on the whole it looks like you took care to accurately map the buildings here.

You updated the river to match the imagery. Please consider the data that you upload in a changeset; editing the river resulted in the changeset bounding box being quite large compared to the building footprints. You also did not state that you edited the river in the changeset comment. You can see what you did in the left hand panel before uploading. osm.wiki/Changeset

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/

Hi, you generally identified buildings visible in imagery and correctly tagged and squared the vast majority of them, however some are not as accurate as the imagery allows e.g. the footprints in the North, and a significant ammount share common nodes when it looks like they shouldn't e.g. the footprints in the South becasue a shadow is visible between the roofs. Consider that you are looking at the roofs of buidlings but mapping their footprints; unless you have reason to believe that buildings share a common wall, please map them seperately.

You ended up adding duplicate footprints in the East. Save your contributions every 5-15 minutes to reduce the likelihood of this and to preserve your work in case of a technical error. (I resolved the duplicated footprints in Changeset: 171939780).

The three footprints in the SE represent one building who's roof has multiple colours.

Please do not connect the corners of buildings to other buildings or features such as highways or residential areas. In the iD Editor, hold down the `Alt` key to prevent your cursor from snapping to existing data and accidentally creating shared(grey) nodes. This [video about connected nodes](https://youtu.be/ltn1VOiq5_0) has more information and a guide.

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/

Welcome to OSM! The vast majority of footprints you mapped here represent buildings; I think that two do not. They could be more accurate, and all buildings I saw in the imagery likely had square footprints. Consider that you are looking at the roofs of buildings, but mapping their footprints. Some roofs may not be exact squares or circles, use the roof shape to infer what shape the footprint is likely to be. See how I mapped this area in https://osmcha.org/changesets/171937547

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](roof:shape=*#Roof_shape), 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.

After tracing and tagging features which are likely square or round, please remember to square their corners (q), or circularise them (o), because it is almost impossible and time consuming to draw shapes so percisely by hand. Buildings with metal or pitched roofs tend to have square corners; round buildings are identifiable by the distinctive cresent shaped shadow they cast. Unless the building is clearly a different shape then it's best to assume that it should be rounded or its corners should be squared. In the iD Editor, you can right click for access to editing functions. Since roofs tend to overhang walls trace the initial shape slightly smaller to allow a buffer for any change in size that may occur. In JOSM use the [buildingstools plugin](osm.wiki/JOSM/Plugins/BuildingsTools). In ID you must draw the shape accurately enough else shapes will not completely square. This [video about squaring features in ID](https://youtu.be/Xs5wX592E1o) has more information and a demo.

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/

All footprints you mapped here represent buildings. You improved the accuracy of an existing footprint; well done. When appropriate, please remember to square footprints after moving their nodes. Thank you for your contribution.
Resolved by;
Changeset: 171936379
Changeset: 171936486

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/

Good job modifying the exisitng footprints here rather than deleting and remapping. You may want to map footprints slightly smaller than the roof you see to give yourself a buffer for the change in shape that occurs during squaring. 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_GOOD #OSMCHA
Published using OSMCha: https://osmcha.org/changesets/171934087

Hi, you appropriately moved the highway to prevent data overlaps and make the relative position of features more accurate.

The vast majority of footprints here represent individual footprints, but two in the South with complex shapes envelope two buildings each; pay attentetion to shadows, roof colours, and access to buildings to know where one building ends and another begins.

Good job modifying the existing building to make room for adding one visible in imagery, though the SW footprint is still longer than the building is in reality.

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/

Hi, this is overall a good cahngeset, but the arrow head shaped building in the NW is likely just a rectangular building and just looks that way becasue the imagery was taken at an angle. see osm.wiki/Roof_modelling#Typical_errors_in_the_interpretation_of_roof_geometry_from_aerial_images for an illustration. Condsider this possibility when you want to map a building with an arrowhead 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/
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#REVIEWED_GOOD #OSMCHA
Published using OSMCha: https://osmcha.org/changesets/171932949

Hi, you are generally identifying buildings. A few of the buildings you mapped are almost as accurate as the imagery allows. Consider that you are looking at the roofs of buildings which likely overhang the walls somewhat. You created invalid shared nodes between buildings and a residnetial area: hold alt to prevent this. Good job trying to map the shape of the western building and not just making it a rectangle. A few of the buildings here have needlessly complex shapes, becasue they envelope multiple buildings; consider if a simple shape can accurately represent a feature before trying other options. See how I mapped some of these in https://osmcha.org/changesets/171934078

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](roof:shape=*#Roof_shape), 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 do not connect the corners of buildings to other buildings or features such as highways or residential areas. In the iD Editor, hold down the `Alt` key to prevent your cursor from snapping to existing data and accidentally creating shared(grey) nodes. This [video about connected nodes](https://youtu.be/ltn1VOiq5_0) has more information and a guide.

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/

Resolved by https://osmcha.org/changesets/171933411
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#REVIEWED_BAD #OSMCHA
Published using OSMCha: https://osmcha.org/changesets/171930102

See how I mapped these buildings in https://osmcha.org/changesets/171933411 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/171930543

Hi, in a couple of places you created shared nodes between buildings that share nodes: hold alt to prevent the creation of shared nodes.

Please do not connect the corners of buildings to other buildings or features such as highways or residential areas. In the iD Editor, hold down the `Alt` key to prevent your cursor from snapping to existing data and accidentally creating shared(grey) nodes. This [video about connected nodes](https://youtu.be/ltn1VOiq5_0) has more information and a guide.

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/

See how I mapped these buildings in https://osmcha.org/changesets/171932108

Weclome to OSM Josh! You identified buildings in the imagery and tagged them correctly but the imagery allows for them to be mapped more accurately; they are generally oversized and should be squared. Please watcht this short video to laern the basics of building mapping in the ID editor. https://youtu.be/Xs5wX592E1o

The following are some comprehensive comments regarding the previous points;

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](roof:shape=*#Roof_shape), 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.

After tracing and tagging features which are likely square or round, please remember to square their corners (q), or circularise them (o), because it is almost impossible and time consuming to draw shapes so percisely by hand. Buildings with metal or pitched roofs tend to have square corners; round buildings are identifiable by the distinctive cresent shaped shadow they cast. Unless the building is clearly a different shape then it's best to assume that it should be rounded or its corners should be squared. In the iD Editor, you can right click for access to editing functions. Since roofs tend to overhang walls trace the initial shape slightly smaller to allow a buffer for any change in size that may occur. In JOSM use the [buildingstools plugin](osm.wiki/JOSM/Plugins/BuildingsTools). In ID you must draw the shape accurately enough else shapes will not completely square. This [video about squaring features in ID](https://youtu.be/Xs5wX592E1o) has more information and a demo.

I hope you find this helpful.

Hi, the buildings you added here are generally valid but oversized. This led to issues where some footprints overlapped other unmapped buildings visible in the imagery. Unless you're sure that a building shares a wall with another it's best to map them seperately.

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](roof:shape=*#Roof_shape), 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 do not connect the corners of buildings to other buildings or features such as highways or residential areas. In the iD Editor, hold down the `Alt` key to prevent your cursor from snapping to existing data and accidentally creating shared(grey) nodes. This [video about connected nodes](https://youtu.be/ltn1VOiq5_0) has more information and a guide.

Please keep this feedbcak in mind in future. I hope this helps.