Hi, the changeset comment here is invalid: it does not relate to any feautre you edited. The relations themselves are valid however, provided the forests were mapped similarly to how they are now; it seems unnecessary to map these residential areas as multipolygons. They are not enveloped by another relation in which they should be inners, and so could just simply be mapped as residential areas. Mapping them this way means that other contributors will just have a harder time editing them. If you remember; why did you map the residential areas in this way? See osm.wiki/Relation:multipolygon#Mapping_style,_best_practice for a comparison of two methods of mapping multipolygons. 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/134375807

Most of the footpritns you added are valid and all have been appropriately squared, but some could be more accurate and others envelope multiple buildings. good job updating/improving some footprints here by modifying the exisitng data instead of deleting and re mapping. Zooming in and out can help a lot to idnetify features and se their shape and orientation. See how I mapped some of the buildings here https://osmcha.org/changesets/170405346 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/170403318

All footpritns you added here are valid and quite accurate. They could be slichtly smaller. 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. 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/170402539

The offset may indeed be different from task to task especially if the area is hilly/mountainous. (depending on the context) For more consistency across larger areas it can be beneficial to align the highways which will run through other tasks so that a consistent alignment can be achieved. This works well when the area is quite flat. Remember to add the offset to the comments as the first thing you do after locking a task for mapping; I've certainly forgoten to state which sources I used and their offsets on a few occasions. It's easy to forget if everything already looks aligned.

You can use the arrow keys at the sides of the offset box for fine adjustment.

In JOSM if you have any questions pressing F1 for context help tends to work well, otherwise check JOSM forums/chanels, or ask. In order to replace geometry you need to install the "utilsplugin2" plugin via preferences (F12) then plugins, search for it and download it. you can click the more info link to see what other functions it enables. You need to replace before you upload by selecting both features and using the shortcut; it doesn't work on features already on the OSM servers.

One thing I forgot to mention is that the situation in this area has changed significantly so only a few features may be common between ESRI and Bing, but it can still be useful.

When using multiple imagery sources you should aim to align them at ground level which makes them easier to work with, features like fences and walls tend to be the best references for this; they have clear edges and are close to the ground.

Regarding project 12803 you are requested to offset the imagery to align with map data becasue it's a long lived project and the imagery has changed. When this happens the position of features may move because their position is claimed to be within X m of the true location.
it isn't worth moving all the existing data; the objective is for all features to be accurately aligned relative to one another.

Though few contributors do it, adding imagery offsets you used in tasking manager comments is highly recommended. It's beneficial for subsequent contributors becasue they can be coppied, and it also shows if you're correctly offsetting imagery. The best way to do this is to copy and paste the offset you used into the comment box as soon as you've determined it. There is no need to add the offset to changeset comments becasue when the imagery changes it likely won't be valid anymore. I figure it likely wouldn't cause any harm, but so far I haven't seen anyone add offsets to changeset comments. I stated a few times which source was the one I was aligning to but currently I jsut let the order of the sources imply that information: in JOSM I tend to have my primary source in layer 1.

Hi, most of the footprints you added here are valid. I flagged some footprints here which I think are clearly inaccurate or envelope multiple buildings. The imagery resolution for the primary source here is poor, so think about the most likely shapes of buildings; you are liable to be mislead by the imagery otherwise. Zooming out then back in IMO is crutial to better seeing identifying a building, its shape, and orientation. I highly recommend referencing a secondary source probably bing if you're using ID. I have posted about the imagery metadata, capture dates and offsets to use in the project comments. In this case the bing offset would be 2.45; 1.69 . Do you know how to offset imagery?
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Published using OSMCha: https://osmcha.org/changesets/170380357

Are you using the drop down menu of past comments, when you're applying comments to your changesets?
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Published using OSMCha: https://osmcha.org/changesets/170366283

Hi, it seems to me that you tend to use very generic and poor changeset comments whenever you map and save changes to multiple features simultaneously i.e. in one changeset. Be deliberate with your uploads/saves. Work on features that have a logical and/or geographic theme between each save: modifying the name of a fast food resturaunt has virtually nothing to do with transportation and power infrastructure. In this case I probably would have mapped this using 4 changesets (each with a good comment) as follows;

1. Change the name of a resturaunt.
2. Add operator wiki data to power station.
3. Map the railways and crossings (like bridges) along them.
4. Map highways and crossings along them.

Doing this will make it easier for others to review your edits, work with them, and provide feedback and comments.

In case you forget what you worked on, the changes you made will be displayed in the panel that opens on the left hand side, when you save your work.
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Published using OSMCha: https://osmcha.org/changesets/170366283

You correctly identified and tagged a bridge in the SW of this 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/
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Published using OSMCha: https://osmcha.org/changesets/170365762

In this changeset some of the power towers are positioned slightly North and West of where they should be. Aim for the centre point between the supports (legs). I know the imagery resolution here is not amazing, but looking at the shadows should help you more acurately position the towers. The shadows are cast NW in this scene and the point your aiming for should be on the same axis (line) as the shadow(s). There are some imagery distortions here, so I recommend using the bottom half of the visible shadow to obtain the axis. Next (if possible) try to identify where the supports meet the ground. You may find that pressing "w" to toggle wireframe mode may help you see the underlying imagery. You can move selected points by pressing "m" to move it with your cursor, or with "shift+arrow key". The ammount of shift depends on your zoom level. try them out and see which you prefer. For a full list of ID editor shortcuts press "?". I hope this helps.
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#REVIEWED_GOOD #OSMCHA
Published using OSMCha: https://osmcha.org/changesets/170365696

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.
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#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/
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#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/
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#REVIEWED_GOOD #OSMCHA
Published using OSMCha: https://osmcha.org/changesets/135113927