Francesc Alted <faltet <at> pytables.org> writes:
> Yes, having everything in a single table and using compression to reduce > unused space is the simplest option. If your maximum length for variable > length field is high (>1000 bytes), you can still use a VLArray for keeping > them, and add another level of indirection in case you want to add/remove > rows. > The variable length field is typically larger than 1000 bytes. They are the (x,y) coordinates of a user selected region from a large image. They vary, but it is not uncommon to have a 100 by 100 pixels region, thus ~20000 values. > The level of indirection can be just an external EArray that keeps track of > the affected operations in the VLArray. Nice, I haven't thought about this approach. However, The EArray itself can only be appended, right? Wouldn't this mean that I still have the original limitation? I guess I could replace the EArray by a table and your proposed solution would work ok for me. Just curious, Am I looking into a weird use case? Is this the reason Arrays are append only, or is it to complex/computationally expensive to implement it? Well, I suppose most people deal with fixed length data, and then you have tables... Thanks for your help, Jorge ------------------------------------------------------------------------------ Download Intel® Parallel Studio Eval Try the new software tools for yourself. Speed compiling, find bugs proactively, and fine-tune applications for parallel performance. See why Intel Parallel Studio got high marks during beta. http://p.sf.net/sfu/intel-sw-dev _______________________________________________ Pytables-users mailing list Pytables-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/pytables-users
