span8
span4
Hello Everyone,
I have 17,000 TIFF files(~3Mb each) that I need to merge to make just one file.While I create the workbench and read the data as Single Merged Feature Type,读取数据需要很多时间(要读取的功能类型),一旦我运行了WB,it ends up crashing or the output(zipped) is not merged.
有什么解决办法吗?
So I asked the Gurus here and they think this should work.Lots of disk space will be needed though.If you could post the log from a failed run (or follow up with support) that would be helpful.We think very little memory would actually be in use at any given time.Assuming you have 3-band uncompressed data as input,如果镶嵌图像大致呈方形,大约是133000x133000。We would have to keep at least one tile worth of data in memory;the size of that tile can be configured on the tiff writer,but defaults to one row (1x133000) which is not much memory at all.So it should be okay.We would suggest trying to write to just an uncompressed Tiff to begin with just to be sure its not the compression getting you at the end,provided you've got the disk space.
(May be relevant to find out what FME Version you're running too).
好挑战。
Oh and one last tip -- when generating the workspace,you could just pick one file when you're generating (and say single merged feature type) and then go and update the source dataset afterwards to *.tiff since the schema isn't something you care about (by default we will be checking the schema of all the input files when you say "single merged" in case they have interesting attributes,and then merging all that we find...great for DWG files,not so much for GeoTIFF)
A rough calculation is that you've got about 50 Gb worth of TIFF files.That's most likely causing memory issues.
Does the output have to be TIFF?How about ECW or JPG2000?
Combing Tiff aerials and viewed in Gtechnology they are messed up with stripes in them1 Answer
为什么geotiff阅读器没有找到位置?2 Answers
是否有直接轮廓光栅文件(geotiff格式)的转换器。Which also does not contour on empty raster cells?4 Answers
My Tiff/geotiff writer will not write any world files or tab files2 Answers
How to combine metadata with Tiff to create GEOTiff?4 Answers
© 2019 亚搏在线Safe Software Inc |Legal