dcd <[email protected]> wrote: > > Merci, > > Two follow up questions: > > 1) Is it possible to specify all bands within a multi-layered image? e.g., > sum(imb*)? I ask because there are times that I wish to run a raster > calculation involving a multi-layered image with 10s or 100s of layers (e.g., > an image > stack representing a time-series of temperature for every week, month, etc.). > > 2) Is it possible to calculate standard deviation, coefficient of variation, > etc. using Band Math? >
Hi, I think that the answer to both your questions is "no". At least not in a single command. You can however use either a shell scripts (i.e. bash) or a the application python bindings to write the necessary loops to do what you want. Jordi > Cheers! > > On Saturday, March 8, 2014 8:30:54 PM UTC, Jonathan Guinet wrote: > > Hello, > > Band Math handle multiple image and bands using imXbY where X refers to > image number and Y refers to band numbers. > > for example if you want to calculate mean over bands of a three band > image you can use : (im1b1+im1b2+im1b3)/3 > > 2014-03-08 15:01 GMT+01:00 dcd <[email protected]>: > > Hi OTB'ers, > > I understand how to use Band Math to accomplish calculations > specifying single images/bands, but is there a way to do Band Math through a > raster stack (e.g., 12 layer raster?). Also, is it possible to calculate the > std dev, > cv, etc for each pixel through the stack? > > Cheers > > -- > -- > Check the OTB FAQ at > http://www.orfeo-toolbox.org/FAQ.html > > You received this message because you are subscribed to the Google > Groups "otb-users" group. > To post to this group, send email to > otb-...-/[email protected] > To unsubscribe from this group, send email to > [email protected] > For more options, visit this group at > http://groups.google.com/group/otb-users?hl=en > --- > You received this message because you are subscribed to the Google > Groups "otb-users" group. > To unsubscribe from this group and stop receiving emails from it, > send an email to [email protected]. > For more options, visit https://groups.google.com/d/optout. > > -- > -- > Check the OTB FAQ at > http://www.orfeo-toolbox.org/FAQ.html > > You received this message because you are subscribed to the Google > Groups "otb-users" group. > To post to this group, send email to > otb-users-/[email protected] > To unsubscribe from this group, send email to > otb-users+unsubscribe-/[email protected] > For more options, visit this group at > http://groups.google.com/group/otb-users?hl=en > --- > You received this message because you are subscribed to the Google Groups > "otb-users" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to otb-users+unsubscribe-/[email protected]. > For more options, visit https://groups.google.com/d/optout. -- -- Check the OTB FAQ at http://www.orfeo-toolbox.org/FAQ.html You received this message because you are subscribed to the Google Groups "otb-users" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/otb-users?hl=en --- You received this message because you are subscribed to the Google Groups "otb-users" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
