Data collection using your memory

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Tips

• Avoid old memories^↙ (even you live there for X0 years, world is constantly changing, your memories are outdated)
• Avoid guessing^↙
  • Mark estimations with note=* or fixme=*
  • Use special general tags like highway=road or building=yes or shop=yes instead of their specific variants
  • Temporarily mark objects with tag source=Bing if you didn't see them in every detail except from using satellite imagery (Bing, for this example)
• Describe hard parts or objects recently changed in the real world
  • simple but descriptive notes will help you and others during process
  • using good changeset comments so you don't have to rely on satellite imagery or anything else
• Try to avoid big changes without recent knowledge of area^↙
  • It is good idea to consult your fellow mappers before your changes via contact channels
  • Try to comment your deletions or even make dedicated changeset with descriptive comment
  • Try to avoid automated edits and execute them with caution

Pros

• You don't need anything else but pair of eyes
  • You don't need dedicated time to record or to process something, just live, look around yourself and add details to OpenStreetMap!^↙
• You don't need to prepare anythng unlike in other techniques

Cons

• You will have troubles memorize everything (or at least in single pass)
  • Especially in unknown location to you
  • Especially in recently changed location
  • Especially in area without recent Aerial Imagery
  • Especially objects with complex/non-linear geometry: Walt Disney Concert Hall, Museo Guggenheim Bilbao and many many others
  • Complex highway inter-exchanges may be challenging to detail without using satellite navigation

See also

• Data collection using preprinted map - more productive approach
• Data collection using short descriptive comments - short comments during surveying will help you regardless of other techniques
• Data collection using paper and pencil - almost equivalent to using memory