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diff --git a/notes.txt b/notes.txt new file mode 100644 index 0000000..47a8324 --- /dev/null +++ b/notes.txt @@ -0,0 +1,25 @@ +Notes on FTP 'scraper' for synoptic charts +SJP 28 Nov 2021 +host : zero +(home theatre PC Raspberry pi 4) + +# Background +I had been musing about making videos of the BOM synoptic charts for some time. +(I may have started this work elsewhere but here I am, proctrasinating instead of doing housework) +It was prompted by a rude message I got yesterday while innocently opening the BOM radar. It accused me of scraping. +It also directed me to the FTP site: + + +pdf file is the one to get. It is a svg image, which can provide higher resolutio than the supplied png file. +I have a vague memory of alredy going down this track, but not on the ftp site. + + + used ImageMagick convert to make the pdf into a png. +But I got an error. Apparently PDF can be hacked so this line was in +/etc/Imagemagick7/policy.xml +Advice from internet was to comment it out like this: + +<!-- <policy domain="delegate" rights="none" pattern="gs" /> --> + +That worked + |