Hi Sherbet:

I had repetitive and continuing instances where editors (usually "import account") have modified and reverted the SGR right of way to incorrect legacy ways based on obsolete sources. If they look at Google Maps, they may get a more current image. I was going to also suggest Sentinel2 Explorer, but that might be beyond most competencies.

thanks,
Baden

Hi Bert et al:

I have recently discovered that both iD editor and Go Map!! have similar properties for (re)combining ways. In both programs, first ascertain which way has the original (multiple) history and select it first, then add the adjoining way. The resultant combined way retains the first way's history.

This information should allow you the ability to correct all the anomalies you discover.

I restored the the history for the particular taxiway you were concerned about.

thanks,
Baden

Hi Mr. George Rhodes et al:

I have recently discovered that both iD editor and Go Map!! have similar properties for (re)combining ways. In both programs, first ascertain which way has the original (multiple) history and select it first, then add the adjoining way. The resultant combined way retains the first way's history.

This information should allow you the ability to correct all the anomalies you discover.

I restored the the history for the particular way you were concerned about.

thanks,
Baden

Hi Jyunhou:

You are correct.
thanks,
Baden

OK, I see now:

way/957772589#map=13/23.4925/103.3608&layers=T

What do you base your assertion on? I see on:

https://en.wikipedia.org/wiki/Caoba%E2%80%93Guanjiashan_railway

"Thus the Caoguan-Yuguopo section of the Caoguan line became a connector between Yunnan's century old metre-gauge Kunming–Hekou line and the new standard-gauge Kunming–Yuxi–Hekou railway."

https://en.wikipedia.org/wiki/Caoba%E2%80%93Guanjiashan_railway

All the latest imagery displays a well maintained railway.

https://www.google.com/maps/@23.5178468,103.4071863,131m/data=!3m1!1e3

https://www.google.com/maps/@23.4675618,103.3225373,131m/data=!3m1!1e3

Much of these narrow gauge lines look like they are still maintained. (Google Earth 2021-03)

thanks,
Baden

Hi Jyunhou:

Perhaps you could be more specific. I checked all six ways, and I left them all with "disused:railway narrow_gauge" and "railway disused".

thanks,
Baden

Hi George Rhodes:

I looked afterwards in more detail at your original query and now at this one. Here are some observations:

- the changes were made on Go Map!! 2.0.7

- it is impossible for me to disconnect or delete a way on Go Map!! or iD editor that has any relation attached.

- the only way that I can disconnect or delete a way, is to first go into iD editor and remove the relations from the concerned way. I then can disconnect or delete the way.

- osmcha.org does not load on my browsers.

- I looked at some nodes on two ways that you referenced, and those nodes still retain their history:

node/3319036437/history

node/7321172276/history

- There could be an OSM or possibly a Go Map!! bug. I suspect the former, as the nodes apparently still exist and my second observation above. I suggest you bring this up with Bryce Cogswell <[email protected]> if it bothers you.

- Since you are an Apple Dude, you could try it out yourself on Go Map!!. It looks like the referenced ways were all "straightened".

- I have had loads of my prior history erased, and I have yet to lose any sleep over it.

thanks,
Baden

Hi Mr. George Rhodes:

Looking at what you pointed to makes no sense. Not that I recall the particular segments in question, but there is almost zero possibility I deleted and then reapplied 18 different relations. There is a possibility I realigned or straightened the segments in question. I suggest a "deletion" might have been an OSM database error.

How did you come across these changes? I do not recall seeing any of your work this area. If you have any sleuthing competency, maybe you could investigate to see what actually occurred.

thanks,
Baden

Hi Bert:

I cannot find any taxiway that I touched that is not intact - A,B,C,D,E,F. I see that some are separated, which I may have done to straighten them, and I neglected to rejoin them.

I would not recommend having 'secret' information on OSM. At anytime, one of 8 billion other people can easily change things. I run into continual problems in Tanzania with school kids changing things, as I believe they have a large mapping program. That is not a bad thing.

For offsets, what I have done is to set a small building as a benchmark using repetitive GPS readings. That way, you and also others, can align imagery offsets, or find the imagery which is closest.

For runways, draw a rectangle similar to what has been done on Entebbe's taxiways:

aeroway=runway

I see the following does not look correct, especially running over the runway:

way/883937525#map=16/0.0449/32.4499

Also, off the old 12/30 runway, there are numerous 'Taxiway H' including on aprons, which I also do not think are correct.

thanks,
Baden

Hi Bert:

All I did was to substantially improve the mapping. I would not have even noticed, if not for the existing flagrant errors and careless work.

I do not recall "deleting taxiways, service roads and other feuatres at our [sic] airport". Specifically, I changed all the 'aprons' to be 'taxiways', and the PAPI 'als' to be 'papi'. I also straightened both runways and major taxiways, and some adjacent drainage ditches.

If you actually discover any features I inadvertently deleted, please notify me, and I will attempt to remediate them.

As a suggestion for improved rendering, you could add an area for runway 17/35. There are also definite alignment issues with all satellite imagery, especially Maxar, and even Bing, which is the noted source.

thanks,
Baden

Harshil:

I just noticed that you ´corrected´ many previously straight rail alignments. What source did you use? Check out "orthorectification errors" and you may see why normally you can trust Indian Railways to have straight alignments over any satellite imagery.

thanks,
Baden

Hi Emilio:

I originally built new correct (unlabelled) routes, and made sure they were all satisfactory. After, I moved the existing incorrect routes over onto the correct alignments. My original paths are now mostly redundant, and I was retaining them anticipating some sabotage on the actual railway lines, so that it would be easier to revert.

I wasn't expecting to ever return to Spain in OSM, as it is was the worst unwelcome OSM environment I have ever worked in.

thanks, Baden

Hola Sanchi:

- Tomé su sugerencia de investigar JOSM, ya que sabía que no funcionaría en mi computadora portátil OS/2, computadora portátil XP, netbook Windows 10 o iPad 4. Leí que JOSM requería Java 8, y también leí que mi Windows 7 compatible con Java 8, así que instalé Java 8 y luego leí la documentación de JOSM que decía:

"Aunque es un programa de 32 bits, josm.exe parece necesitar un Java de 64 bits en Windows de 64 bits".

Sí, sería bueno si todos pudieran pagar la última estación de trabajo de 64 bits habilitada para GIS, pero se supone que OSM es inclusivo.

- "en España las imágenes aéreas mejor posicionadas son las del PNOA"

estos parecen ser los mismos que las imágenes de ESRI, pero el servidor de teselas PNOA es mucho más lento.

- Hay mucho más "datos inútiles" en el su region de León:

relation/9804856

ciao!
Baden

Hola Sanchi:

- los círculos solo son visibles en el modo de edición OSM.

- hay 100 000+ km de líneas inútiles que ya proliferan en OSM. Vi a muchos en esta área.

- la mayoría de las personas nunca se dan cuenta de los círculos a menos que estén jugando a ser policías.

- yo uso Go Map!! en un iPad para hacer y modificar los círculos.

- utilizo iD en OS/2 junto con otra aplicación para comparar las alineaciones con otra documentación y dibujos, y para modificar el etiquetado.

- a veces también uso iD en Windows 7 para editar alineaciones con círculos.

- por alguna razón, las lineas en Go Map !! no siempre se alinean exactamente en iD.

- a menudo paso varios días o semanas construyendo y corrigiendo rutas.

- en muchas rutas, las imágenes satelitales son primitivas o sospechosas, y espero imágenes mejor actualizadas. Esto no se aplica a esta área, ya que las rutas están establecidas y las imágenes son buenas.

- guardo mi trabajo con frecuencia, ya que las aplicaciones a menudo se bloquean. Go Map!! está mejorando mucho, pero iD está empeorando mucho.

- por las razones anteriores, no puedo imaginar razonablemente ninguna alternativa a los procedimientos actuales.

gracias
Baden

Thank-you for your support.

Baden

Hola jeslop:

"Thanks for helping." ??? All the work in this Changeset was deleted by you, so the many hours of fine work which I was proud of were obliterated without cause or notice.

Most people quickly realise the circles are associated with the railway alignments. They are used as a temporary framework to properly align the railway curves, especially in tunnels. In case you did not know, railway alignments are a combination of tangent rhumb lines and constant radii (i.e. circles). The Pajares area was particularly sloppy, which motivated me to work in this area, especially considering the ongoing interest in the old and new railway lines. Once I am satisfied that no more revisions or better imagery are available, I can easily select and delete the circles, as retaining them makes revisions trivial.

You could do OSM a huge favour, and reinstate the deleted Changeset(s) that corrected the "Variante de Pajares" for the two (parallel) 2700 m curves. If you desire, you could subsequently then take the two seconds required to selectively delete only the r=2700 and r=2704 circles while retaining the corrected alignments, as it looks like my work is complete on that particular segment.

gracias,
Baden

Hola Sanchi:

Los círculos se utilizaron como marco temporal para alinear correctamente las curvas del ferrocarril, especialmente en túneles. Todo el trabajo en este Changeset fue eliminado por "jeslop", por lo que las muchas horas de excelente trabajo del que estaba orgulloso fueron borradas sin causa ni aviso.

gracias,
Baden

Hi:

I'll just have to ensure that the section is completed. I think I was waiting for some clear sky sentinel 2 imagery to verify the alignment,

thanks,
Baden

Hi muramototomoya:

Thanks, That is a good suggestion to help prevent confusion, I will proceed to do that.

thanks,
Baden

(better formatting)

Hi muramototomoya:

These objects are circles with 6500 m radii for the new Hokkaido Shinkansen under construction to Saporro. The Shinkansen has a nominal 6500 m curve minimum radius, and fortunately, the entire Shinkansen project appears to use this curve dimension. I used about 22 circles to construct the curves for the railway project. I am currently also aligning the tangents between these curves.

thanks,
Baden