{"id":146,"date":"2012-12-18T12:27:12","date_gmt":"2012-12-18T18:27:12","guid":{"rendered":"http:\/\/cartometric.com\/blog\/?p=146"},"modified":"2014-09-25T13:31:39","modified_gmt":"2014-09-25T18:31:39","slug":"mapnik-rundemo-exe-error-run-from-within-the-democ-folder","status":"publish","type":"post","link":"https:\/\/elrobis.com\/blog\/2012\/12\/18\/mapnik-rundemo-exe-error-run-from-within-the-democ-folder\/","title":{"rendered":"mapnik rundemo.exe error: run from within the demo\/c++ folder?"},"content":{"rendered":"

So I just installed the mapnik 2.0.1 binaries for Windows<\/a>, and I ran into a “gotcha.” I couldn’t figure this out by Googling, so hopefully this post will help someone.\u00a0 (Be sure to note the embarrassing conclusion.)<\/p>\n

Specifically, following a fresh mapnik install, rundemo.exe told me this:<\/p>\n

C:\\mapnik-2.0.1rc0\\demo\\c++>rundemo.exe<\/strong>
\nusage: .\/rundemo <mapnik_install_dir>
\nUsually \/usr\/local\/lib\/mapnik
\nWarning: .\/rundemo looks for data in ..\/data\/,
\nTherefore must be run from within the demo\/c++ folder<\/span>.<\/p><\/blockquote>\n

Note the first bit:\u00a0 usage: .\/rundemo <mapnik_install_dir><\/strong><\/p>\n

 <\/p>\n

Well ok, that’s fine. Except this didn’t work, either:<\/p>\n

C:\\mapnik-2.0.1rc0\\demo\\c++>rundemo C:\\mapnik-2.0.1rc0<\/strong>
\nrunning demo …
\nlooking for ‘shape.input’ plugin in… C:\\mapnik-2.0.1rc0\/input\/
\nlooking for DejaVuSans font in… C:\\mapnik-2.0.1rc0\/fonts\/DejaVuSans.ttf
\n### Configuration error: Could not create datasource. No plugin found for type ‘shape’ (searched in: C:\\mapnik-2.0.1rc0\/input\/)<\/p><\/blockquote>\n

Hmm, but that is my install path??<\/p>\n

 <\/p>\n

Anyway, I finally figured it out. This works:<\/p>\n

C:\\mapnik-2.0.1rc0\\demo\\c++>rundemo C:\/mapnik-2.0.1rc0\/lib\/mapnik<\/strong><\/span>
\nrunning demo …
\n[… yadda yadda …]<\/p>\n

 <\/p>\n

Now for the embarrassing part—I was juxtaposing between this install tutorial<\/a> and this other install tutorial<\/a>, and clearly I did not pay close attention to the second. It turns out, if my eyes were peeled, I might have noticed this:<\/p>\n

Then you should be able to run the demo program:<\/em><\/p>\n

cd c:\\mapnik-2.0.1rc0\\demo\\c++ rundemo ..\\..\\lib\\mapnik<\/em><\/pre>\n<\/blockquote>\n
 <\/p>\n
I’d like to quote Donald Knuth and re-state: “Software is hard”<\/em><\/a>, but this is just a good, old-fashioned case of I-was-dumb. Nevertheless, I was stumped and Googling didn’t help, so maybe this will save some the confusion. :\/<\/p>\n
 <\/p>\n
“You know those guitars that are like ..double guitars?!?!”<\/em><\/p><\/blockquote>\n","protected":false},"excerpt":{"rendered":"
So I just installed the mapnik 2.0.1 binaries for Windows, and I ran into a “gotcha.” I couldn’t figure this out by Googling, so hopefully this post will help someone.\u00a0 (Be sure to note the embarrassing conclusion.) Specifically, following a fresh mapnik install, rundemo.exe told me this: C:\\mapnik-2.0.1rc0\\demo\\c++>rundemo.exe usage: .\/rundemo <mapnik_install_dir> Usually \/usr\/local\/lib\/mapnik Warning: .\/rundemo […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[34],"tags":[22],"_links":{"self":[{"href":"https:\/\/elrobis.com\/blog\/wp-json\/wp\/v2\/posts\/146"}],"collection":[{"href":"https:\/\/elrobis.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/elrobis.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/elrobis.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/elrobis.com\/blog\/wp-json\/wp\/v2\/comments?post=146"}],"version-history":[{"count":3,"href":"https:\/\/elrobis.com\/blog\/wp-json\/wp\/v2\/posts\/146\/revisions"}],"predecessor-version":[{"id":261,"href":"https:\/\/elrobis.com\/blog\/wp-json\/wp\/v2\/posts\/146\/revisions\/261"}],"wp:attachment":[{"href":"https:\/\/elrobis.com\/blog\/wp-json\/wp\/v2\/media?parent=146"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/elrobis.com\/blog\/wp-json\/wp\/v2\/categories?post=146"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/elrobis.com\/blog\/wp-json\/wp\/v2\/tags?post=146"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}