Naive XML questions
I feel stupid, but even with Sarah Reichelt’s help, there are very very simple things I can’t do with the LC XML functions. My current problem is this: I have a series of XML files which are in fact .gpx files - a collection of GPS coordinates representing a route on the Earth’s surface. There are thousands of files around which I can use as test data, so I don’t have to roll my own. Taking just one of these examples, I can do the following in LC 1. Get the user to find the file and download it 2. Check it’s a .gpx file 3. Turn it into an LC XML data structure with an integer ID 4. Find out how many child nodes there are. Then it all goes wrong, because I don’t seem to be able to address the individual nodes. This is obviously needed for further progress, in functions like revXMLFirstChild and revXMLNodeContents. I just don’t know what format to use. Sarah’s tutorial doesn’t help because her data structure is too simplified. If you’re still with me, this is what the beginning of a typical file looks like: > > http://www.topografix.com/GPX/1/1; creator="Digital Crow" > version="1.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance; > xsi:schemaLocation="http://www.topografix.com/GPX/1/1 > http://www.topografix.com/GPX/1/1/gpx.xsd;> > > > > > 169.623637 > > 169.744722 > > 169.744722 > > 169.266626 > etc - there may sometimes be thousands of these “trkpt” elements. So, suppose I want to get the first instance of the “lon” attribute into a local variable. How do I address the first node etc in order to do it? I have attempted various common-sense methods, but none work. This must be child’s play to a lot of people, just not me. Hoping for some guidance. Graham ___ use-livecode mailing list use-livecode@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode
Re: Naive XML questions
I know nothing about it, so I can feel free to answer:-) Don’t care about the file format- look at the array format, probably in the IDE/debugger. That’s probably going to let you see how to address the individual nodes. Alex Sent from my iPhone > On 25 Oct 2020, at 17:21, Graham Samuel via use-livecode > wrote: > > I feel stupid, but even with Sarah Reichelt’s help, there are very very > simple things I can’t do with the LC XML functions. My current problem is > this: > > I have a series of XML files which are in fact .gpx files - a collection of > GPS coordinates representing a route on the Earth’s surface. There are > thousands of files around which I can use as test data, so I don’t have to > roll my own. Taking just one of these examples, I can do the following in LC > > 1. Get the user to find the file and download it > > 2. Check it’s a .gpx file > > 3. Turn it into an LC XML data structure with an integer ID > > 4. Find out how many child nodes there are. > > Then it all goes wrong, because I don’t seem to be able to address the > individual nodes. This is obviously needed for further progress, in functions > like revXMLFirstChild and revXMLNodeContents. > > I just don’t know what format to use. Sarah’s tutorial doesn’t help because > her data structure is too simplified. > > If you’re still with me, this is what the beginning of a typical file looks > like: > >> >> http://www.topografix.com/GPX/1/1; creator="Digital Crow" >> version="1.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance; >> xsi:schemaLocation="http://www.topografix.com/GPX/1/1 >> http://www.topografix.com/GPX/1/1/gpx.xsd;> >> >> >> > >> >> 169.623637 > >> >> 169.744722 > >> >> 169.744722 > >> >> 169.266626 >> > etc - there may sometimes be thousands of these “trkpt” elements. > > So, suppose I want to get the first instance of the “lon” attribute into a > local variable. How do I address the first node etc in order to do it? > I have attempted various common-sense methods, but none work. > > This must be child’s play to a lot of people, just not me. > > Hoping for some guidance. > > Graham > ___ > use-livecode mailing list > use-livecode@lists.runrev.com > Please visit this url to subscribe, unsubscribe and manage your subscription > preferences: > http://lists.runrev.com/mailman/listinfo/use-livecode ___ use-livecode mailing list use-livecode@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode
Re: Naive XML questions
In his reply to you I think Alex is suggesting you use the handlers that come with the Datagrid. These can convert xml to a LC array. You might find it easier just to deal with a familair data structure rather than learn XML. I found them here: http://revonline2.runrev.com/stack/571/XMLAndArrays But the handlers are also to be found inside the datagrid library in the IDE (I suspect they are more up to date). On Sun, Oct 25, 2020 at 5:22 PM Graham Samuel via use-livecode < use-livecode@lists.runrev.com> wrote: > I feel stupid, but even with Sarah Reichelt’s help, there are very very > simple things I can’t do with the LC XML functions. My current problem is > this: > > I have a series of XML files which are in fact .gpx files - a collection > of GPS coordinates representing a route on the Earth’s surface. There are > thousands of files around which I can use as test data, so I don’t have to > roll my own. Taking just one of these examples, I can do the following in LC > > 1. Get the user to find the file and download it > > 2. Check it’s a .gpx file > > 3. Turn it into an LC XML data structure with an integer ID > > 4. Find out how many child nodes there are. > > Then it all goes wrong, because I don’t seem to be able to address the > individual nodes. This is obviously needed for further progress, in > functions like revXMLFirstChild and revXMLNodeContents. > > I just don’t know what format to use. Sarah’s tutorial doesn’t help > because her data structure is too simplified. > > If you’re still with me, this is what the beginning of a typical file > looks like: > > > > > http://www.topografix.com/GPX/1/1; creator="Digital Crow" > version="1.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance; > xsi:schemaLocation="http://www.topografix.com/GPX/1/1 > http://www.topografix.com/GPX/1/1/gpx.xsd;> > > > > > > > > > > > 169.623637 > > > > > 169.744722 > > > > > 169.744722 > > > > > 169.266626 > > > etc - there may sometimes be thousands of these “trkpt” elements. > > So, suppose I want to get the first instance of the “lon” attribute into a > local variable. How do I address the first node etc in order to do > it? I have attempted various common-sense methods, but none work. > > This must be child’s play to a lot of people, just not me. > > Hoping for some guidance. > > Graham > ___ > use-livecode mailing list > use-livecode@lists.runrev.com > Please visit this url to subscribe, unsubscribe and manage your > subscription preferences: > http://lists.runrev.com/mailman/listinfo/use-livecode > ___ use-livecode mailing list use-livecode@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode
Re: How to resolve "unable to locate play service dependency base version 9.4.0"
Panos wrote: > This will probably help: > > https://quality.livecode.com/show_bug.cgi?id=22384 The instructions in your comment there certainly did. Thank you. -- Richard Gaskin Fourth World Systems Software Design and Development for the Desktop, Mobile, and the Web ambassa...@fourthworld.comhttp://www.FourthWorld.com ___ use-livecode mailing list use-livecode@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode
iOS Emoji keyboard does not print to PDF?!
Hi there, A simple iOS app in which the user chooses the iOS keyboard to add text and an Emoji to a standard LC text field. I use 'export snapshot' to PDF as PNG to print to PDF. When there is only text in the field all text is printed to the PDF but when an Emoji is added the Emoji is not printed to the PDF. Am I missing something? Do I need to add some code? iOS 13 LC 9,6,1 Indy greetings, William ___ use-livecode mailing list use-livecode@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode
Re: iOS Emoji keyboard does not print to PDF?!
" 'export snapshot' to PDF as PNG" sounds a bit odd. On 25.10.20 21:47, William de Smet via use-livecode wrote: Hi there, A simple iOS app in which the user chooses the iOS keyboard to add text and an Emoji to a standard LC text field. I use 'export snapshot' to PDF as PNG to print to PDF. When there is only text in the field all text is printed to the PDF but when an Emoji is added the Emoji is not printed to the PDF. Am I missing something? Do I need to add some code? iOS 13 LC 9,6,1 Indy greetings, William ___ use-livecode mailing list use-livecode@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode ___ use-livecode mailing list use-livecode@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode
Re: Naive XML questions
On 25/10/2020 18:51, Bernard Devlin via use-livecode wrote: In his reply to you I think Alex is suggesting you use the handlers that come with the Datagrid. These can convert xml to a LC array. You might find it easier just to deal with a familair data structure rather than learn XML. I found them here: http://revonline2.runrev.com/stack/571/XMLAndArrays But the handlers are also to be found inside the datagrid library in the IDE (I suspect they are more up to date). Or indeed on Trevor's GitHub page, which is where I could vaguely remember having seen them. But wherever you get them from, they do provide a (fairly straightforward) familiar interface of a LC array. (And give us yet another reason to say "thank you" to Trevor :-) Alex. ___ use-livecode mailing list use-livecode@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode
Re: Naive XML questions
Graham, here's the basic approach (assuming your XML is in the variable 'tXML'): put revXMLCreateTree(tXML,false,true,false) into tTreeID put "/gpx/trk/trkseg/trkpt[1]" into tNode -- the brackets identify the instance of "trkpt" to work with put revXMLAttribute(tTreeID, tNode,"lon") into tLonValue put revXMLNodeContents(tTreeID,(tNode & "/ele")) into tEleValue put tLonValue && "/" && tEleValue >> 2.128369 / 169.623637 So to work with the third instance of "trkpt", you'd do: put "/gpx/trk/trkseg/trkpt[3]" into tNode Hope this helps, Ken > On Oct 25, 2020, at 12:21 PM, Graham Samuel via use-livecode > wrote: > > I feel stupid, but even with Sarah Reichelt’s help, there are very very > simple things I can’t do with the LC XML functions. My current problem is > this: > > I have a series of XML files which are in fact .gpx files - a collection of > GPS coordinates representing a route on the Earth’s surface. There are > thousands of files around which I can use as test data, so I don’t have to > roll my own. Taking just one of these examples, I can do the following in LC > > 1. Get the user to find the file and download it > > 2. Check it’s a .gpx file > > 3. Turn it into an LC XML data structure with an integer ID > > 4. Find out how many child nodes there are. > > Then it all goes wrong, because I don’t seem to be able to address the > individual nodes. This is obviously needed for further progress, in functions > like revXMLFirstChild and revXMLNodeContents. > > I just don’t know what format to use. Sarah’s tutorial doesn’t help because > her data structure is too simplified. > > If you’re still with me, this is what the beginning of a typical file looks > like: > >> >> http://www.topografix.com/GPX/1/1; creator="Digital Crow" >> version="1.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance; >> xsi:schemaLocation="http://www.topografix.com/GPX/1/1 >> http://www.topografix.com/GPX/1/1/gpx.xsd;> >> >> >> > >> >> 169.623637 > >> >> 169.744722 > >> >> 169.744722 > >> >> 169.266626 >> > etc - there may sometimes be thousands of these “trkpt” elements. > > So, suppose I want to get the first instance of the “lon” attribute into a > local variable. How do I address the first node etc in order to do it? > I have attempted various common-sense methods, but none work. > > This must be child’s play to a lot of people, just not me. > > Hoping for some guidance. > > Graham > ___ > use-livecode mailing list > use-livecode@lists.runrev.com > Please visit this url to subscribe, unsubscribe and manage your subscription > preferences: > http://lists.runrev.com/mailman/listinfo/use-livecode Ken Ray Sons of Thunder Software, Inc. Email: k...@sonsothunder.com Website: https://www.sonsothunder.com ___ use-livecode mailing list use-livecode@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode
Re: iOS Emoji keyboard does not print to PDF?!
I think that emojis not rendering to PDF has been a longstanding issue… and I thought that I had filed a bug report on this but looking at bugzilla, I failed to find it. (sigh). I have code in two of my apps that alert the user, should PDF creation fail, that they should remove emojis from their text. I have on my to-do list a workaround project that would use imageSource to substitute for known emoji codes. So, while none of this is of any help, I feel your pain :- ) -- Scott Morrow Elementary Software (Now with 20% less chalk dust!) web https://elementarysoftware.com/ email sc...@elementarysoftware.com booth1-360-734-4701 -- > On Oct 25, 2020, at 2:34 PM, William de Smet via use-livecode > wrote: > > Hi Richmond, > > That’s the short version of the code. > Like I said it works fine as long as it is text only. When an Emoji from the > iOS keyboard is added the Emoji is not printed in the PDF. > > > > > > >> Op 25 okt. 2020 om 21:13 heeft Richmond via use-livecode >> het volgende geschreven: >> >> " 'export snapshot' to PDF as PNG" sounds a bit odd. >> >>> On 25.10.20 21:47, William de Smet via use-livecode wrote: >>> Hi there, >>> >>> A simple iOS app in which the user chooses the iOS keyboard to add text and >>> an Emoji to a standard LC text field. >>> I use 'export snapshot' to PDF as PNG to print to PDF. >>> When there is only text in the field all text is printed to the PDF but >>> when an Emoji is added the Emoji is not printed to the PDF. >>> Am I missing something? >>> Do I need to add some code? >>> >>> iOS 13 >>> LC 9,6,1 Indy >>> >>> >>> greetings, >>> >>> William >>> ___ >>> use-livecode mailing list >>> use-livecode@lists.runrev.com >>> Please visit this url to subscribe, unsubscribe and manage your >>> subscription preferences: >>> http://lists.runrev.com/mailman/listinfo/use-livecode ___ use-livecode mailing list use-livecode@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode
Re: iOS Emoji keyboard does not print to PDF?!
Hi Richmond, That’s the short version of the code. Like I said it works fine as long as it is text only. When an Emoji from the iOS keyboard is added the Emoji is not printed in the PDF. > Op 25 okt. 2020 om 21:13 heeft Richmond via use-livecode > het volgende geschreven: > > " 'export snapshot' to PDF as PNG" sounds a bit odd. > >> On 25.10.20 21:47, William de Smet via use-livecode wrote: >> Hi there, >> >> A simple iOS app in which the user chooses the iOS keyboard to add text and >> an Emoji to a standard LC text field. >> I use 'export snapshot' to PDF as PNG to print to PDF. >> When there is only text in the field all text is printed to the PDF but >> when an Emoji is added the Emoji is not printed to the PDF. >> Am I missing something? >> Do I need to add some code? >> >> iOS 13 >> LC 9,6,1 Indy >> >> >> greetings, >> >> William >> ___ >> use-livecode mailing list >> use-livecode@lists.runrev.com >> Please visit this url to subscribe, unsubscribe and manage your subscription >> preferences: >> http://lists.runrev.com/mailman/listinfo/use-livecode > > > ___ > use-livecode mailing list > use-livecode@lists.runrev.com > Please visit this url to subscribe, unsubscribe and manage your subscription > preferences: > http://lists.runrev.com/mailman/listinfo/use-livecode ___ use-livecode mailing list use-livecode@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode
