[PD] Help parsing HTML with [httpget]

Philip Cunningham Sat, 05 Mar 2011 01:38:11 -0800

Hello all,

I was working on a patch that visualises and sonifies weather data
posted online in an HTML document. I was using [httpget] to grab the
document and using [listsplit] and [symbol2list] to parse the
necessary data. However, using this method, I will often get the error
"error: unpack: type mismatch". I was wondering if someone could look
at the patch and advise me of a cleaner way of doing this or showing
me what I might be doing wrong? It works 70% the time. Initially, I
was just increasing the frequency of the [httpget] to ensure that the
data changes are captured but this method isn't very clean and would
appreciate any corrections or feedback.


Patch: http://uiu.me/6.pd
This Weather: http://vimeo.com/16472933
[httpget]: http://puredata.info/docs/tutorials/SimpleWebclient

Best wishes,
Philip Cunningham

-- 
Portfolio: http://philipcunningham.org
BrightonPD: http://unsymbol.users.anapnea.net/brightonpd/
Chipmusic: http://firebrandboy.org

#N canvas 0 49 1267 683 10;
#X declare -lib moocow;
#X obj 1005 149 httpget;
#X obj 1224 166 tgl 15 0 empty empty empty 17 7 0 10 -262144 -1 -1
0 1;
#X obj 1204 190 unpack 0 0 0 0;
#X floatatom 1204 215 3 0 0 0 - - -;
#X floatatom 1231 215 3 0 0 0 - - -;
#X floatatom 1258 215 3 0 0 0 - - -;
#X floatatom 1285 215 3 0 0 0 - - -;
#X msg 1005 84 http://weather.elec.york.ac.uk/liveOutput/vaisala/current.html
;
#X msg 1044 129 5;
#X obj 5 427 list split 1;
#X obj 39 459 list split 29;
#X obj 76 489 list split 1;
#X obj 76 521 symbol2list >;
#X symbolatom 103 578 16 0 0 0 - - -;
#X obj 76 551 unpack s s s s;
#X obj 103 604 symbol2list </span;
#X obj 1005 29 tgl 15 0 empty switch empty 17 7 0 10 -262144 -1 -1
0 1;
#X obj 103 636 unpack f;
#X floatatom 103 693 5 0 0 3 current_temperature_(C) - temp;
#X obj 175 429 list split 1;
#X obj 209 459 list split 62;
#X obj 249 484 list split 1;
#X obj 256 521 symbol2list >;
#X symbolatom 283 580 16 0 0 0 - - -;
#X obj 256 553 unpack s s s s;
#X obj 283 606 symbol2list </span;
#X obj 283 638 unpack f;
#X floatatom 283 695 5 0 0 3 wind_chill_(C) - chill;
#X obj 395 429 list split 84;
#X obj 432 464 list split 1;
#X obj 432 501 symbol2list >;
#X symbolatom 459 560 16 0 0 0 - - -;
#X obj 432 533 unpack s s s s;
#X obj 459 586 symbol2list </span;
#X obj 459 618 unpack f;
#X floatatom 459 684 7 0 0 3 pressure_(mBars) - pressure;
#X obj 595 429 list split 111;
#X obj 635 464 list split 1;
#X obj 635 501 symbol2list >;
#X symbolatom 662 560 16 0 0 0 - - -;
#X obj 635 533 unpack s s s s;
#X obj 662 586 symbol2list </span;
#X obj 662 618 unpack f;
#X floatatom 662 685 7 0 0 3 wind_speed_(mph) - speed;
#X obj 775 429 list split 127;
#X obj 815 464 list split 1;
#X obj 815 501 symbol2list >;
#X symbolatom 842 560 16 0 0 0 - - -;
#X obj 815 533 unpack s s s s;
#X obj 842 586 symbol2list </span;
#X obj 842 618 unpack f;
#X floatatom 842 685 7 0 0 3 wind_gust_(mph) - gust;
#X obj 945 429 list split 144;
#X obj 985 464 list split 1;
#X obj 985 501 symbol2list >;
#X symbolatom 1012 560 16 0 0 0 - - -;
#X obj 985 533 unpack s s s s;
#X obj 1012 586 symbol2list </span;
#X obj 1012 618 unpack f;
#X floatatom 1012 685 7 0 0 3 wind_direction_(degrees) - direction
;
#X obj 1175 464 list split 1;
#X obj 1175 501 symbol2list >;
#X symbolatom 1202 560 16 0 0 0 - - -;
#X obj 1175 533 unpack s s s s;
#X obj 1202 586 symbol2list </span;
#X obj 1202 618 unpack f;
#X floatatom 1202 685 7 0 0 3 humidity_(%) - humidity;
#X obj 1135 429 list split 151;
#X obj 1285 429 list split 160;
#X obj 1325 464 list split 1;
#X obj 1325 501 symbol2list >;
#X symbolatom 1352 560 16 0 0 0 - - -;
#X obj 1325 533 unpack s s s s;
#X obj 1352 586 symbol2list </span;
#X obj 1352 618 unpack f;
#X floatatom 1352 685 7 0 0 3 dew_point_(C) - dew;
#X obj 1435 429 list split 175;
#X obj 1475 464 list split 1;
#X obj 1475 501 symbol2list >;
#X symbolatom 1502 560 16 0 0 0 - - -;
#X obj 1475 533 unpack s s s s;
#X obj 1502 586 symbol2list </span;
#X obj 1502 618 unpack f;
#X floatatom 1502 685 7 0 0 3 rainfall_(since_midnight_mm) - rain;
#X obj 1645 429 list split 207;
#X obj 1685 464 list split 1;
#X obj 1685 501 symbol2list >;
#X symbolatom 1712 560 16 0 0 0 - - -;
#X obj 1685 533 unpack s s s s;
#X obj 1712 586 symbol2list </span;
#X obj 1712 618 unpack f;
#X floatatom 1712 685 7 0 0 3 hail_fall_(since_midnight_cm2) - hail
;
#X obj 1433 166 list split 212;
#X obj 1473 197 list split 7;
#X obj 1473 220 print;
#X text 25 52 [httpget] retrieves html document from the web. this
is information is parsed into a readable form using [list split] and
[symbol2list].;
#X text 1514 220 prints the time/date of information from page on the
web.;
#X obj 103 665 change;
#X obj 283 665 change;
#X obj 459 651 change;
#X obj 662 652 change;
#X obj 842 652 change;
#X obj 1012 652 change;
#X obj 1202 652 change;
#X obj 1352 652 change;
#X obj 1502 650 change;
#X obj 1712 650 change;
#X obj 1005 54 metro 20000;
#X text 1081 53 updates ever 20 seconds to compensate for parsing errors
;
#X connect 0 0 9 0;
#X connect 0 0 19 0;
#X connect 0 0 28 0;
#X connect 0 0 36 0;
#X connect 0 0 44 0;
#X connect 0 0 52 0;
#X connect 0 0 67 0;
#X connect 0 0 68 0;
#X connect 0 0 76 0;
#X connect 0 0 84 0;
#X connect 0 0 92 0;
#X connect 0 1 2 0;
#X connect 0 2 1 0;
#X connect 2 0 3 0;
#X connect 2 1 4 0;
#X connect 2 2 5 0;
#X connect 2 3 6 0;
#X connect 7 0 0 0;
#X connect 8 0 0 1;
#X connect 9 1 10 0;
#X connect 10 1 11 0;
#X connect 11 0 12 0;
#X connect 12 0 14 0;
#X connect 13 0 15 0;
#X connect 14 1 13 0;
#X connect 15 0 17 0;
#X connect 16 0 107 0;
#X connect 17 0 97 0;
#X connect 19 1 20 0;
#X connect 20 1 21 0;
#X connect 21 0 22 0;
#X connect 22 0 24 0;
#X connect 23 0 25 0;
#X connect 24 1 23 0;
#X connect 25 0 26 0;
#X connect 26 0 98 0;
#X connect 28 1 29 0;
#X connect 29 0 30 0;
#X connect 30 0 32 0;
#X connect 31 0 33 0;
#X connect 32 1 31 0;
#X connect 33 0 34 0;
#X connect 34 0 99 0;
#X connect 36 1 37 0;
#X connect 37 0 38 0;
#X connect 38 0 40 0;
#X connect 39 0 41 0;
#X connect 40 1 39 0;
#X connect 41 0 42 0;
#X connect 42 0 100 0;
#X connect 44 1 45 0;
#X connect 45 0 46 0;
#X connect 46 0 48 0;
#X connect 47 0 49 0;
#X connect 48 1 47 0;
#X connect 49 0 50 0;
#X connect 50 0 101 0;
#X connect 52 1 53 0;
#X connect 53 0 54 0;
#X connect 54 0 56 0;
#X connect 55 0 57 0;
#X connect 56 1 55 0;
#X connect 57 0 58 0;
#X connect 58 0 102 0;
#X connect 60 0 61 0;
#X connect 61 0 63 0;
#X connect 62 0 64 0;
#X connect 63 1 62 0;
#X connect 64 0 65 0;
#X connect 65 0 103 0;
#X connect 67 1 60 0;
#X connect 68 1 69 0;
#X connect 69 0 70 0;
#X connect 70 0 72 0;
#X connect 71 0 73 0;
#X connect 72 1 71 0;
#X connect 73 0 74 0;
#X connect 74 0 104 0;
#X connect 76 1 77 0;
#X connect 77 0 78 0;
#X connect 78 0 80 0;
#X connect 79 0 81 0;
#X connect 80 1 79 0;
#X connect 81 0 82 0;
#X connect 82 0 105 0;
#X connect 84 1 85 0;
#X connect 85 0 86 0;
#X connect 86 0 88 0;
#X connect 87 0 89 0;
#X connect 88 1 87 0;
#X connect 89 0 90 0;
#X connect 90 0 106 0;
#X connect 92 1 93 0;
#X connect 93 0 94 0;
#X connect 97 0 18 0;
#X connect 98 0 27 0;
#X connect 99 0 35 0;
#X connect 100 0 43 0;
#X connect 101 0 51 0;
#X connect 102 0 59 0;
#X connect 103 0 66 0;
#X connect 104 0 75 0;
#X connect 105 0 83 0;
#X connect 106 0 91 0;
#X connect 107 0 7 0;

_______________________________________________
Pd-list@iem.at mailing list
UNSUBSCRIBE and account-management -> 
http://lists.puredata.info/listinfo/pd-list

[PD] Help parsing HTML with [httpget]

Reply via email to