jeremyp

Everybody knows that. Are you running out of inspiration? ------- jeremyp We're going to need a bigger boat!

The topografix format is pretty easy to work out with an understanding of the way computers store numbers and things. ------- jeremyp We're going to need a bigger boat!

I can't vote for any of the options. I tend to plot the point with Autoroute and then use a *real* OS paper map when I'm out there on the ground. ------- jeremyp We're going to need a bigger boat!

I've nearly finished reverse engineering the easygps ".loc" format. I'm writing a utility to convert csv to .loc and vice versa ------- jeremyp We're going to need a bigger boat!

Would this count as advertising a cache ------- jeremyp We're going to need a bigger boat!

Would this count as advertising a cache ------- jeremyp We're going to need a bigger boat!

Well I try to take a camera with me. You never know who you are going to meet when caching. Here is a photo I took of some people I met in Ely: http://jeremyp.net/geocaching/ely-1-small.jpg Hmmm.. maybe I should take a camera less often ------- jeremyp We're going to need a bigger boat!

Well I try to take a camera with me. You never know who you are going to meet when caching. Here is a photo I took of some people I met in Ely: http://jeremyp.net/geocaching/ely-1-small.jpg Hmmm.. maybe I should take a camera less often ------- jeremyp We're going to need a bigger boat!

So you think it's probably South of Blackpool, there's a village whose name you can't recall, there are some fields and a public bridleway.... I think it's still a bit of a long shot I'd rate it difficulty 5 for now if I were you ------- jeremyp We're going to need a bigger boat!

So you think it's probably South of Blackpool, there's a village whose name you can't recall, there are some fields and a public bridleway.... I think it's still a bit of a long shot I'd rate it difficulty 5 for now if I were you ------- jeremyp We're going to need a bigger boat!

I did three B&C caches that day. That was definitely the best hidden. Obelisk was really infuriating - it took mer ages in spite of the cache being nearly in plain view. Obelisk had the best location. I thought Greenwich should be in view but I couldn't see it. Perhaps there was a line of obelisks on hilltops originally. Lee valley had a bizarre semi-industrial location and had the most challenging approach (especially without a map I imagine). It was a beautiful day and a nice variety of caches. ------- jeremyp We're going to need a bigger boat!

It could be a freebee from a computer show. I was at one last year where this company was promoting a USB security device which you could put on a keyring. They were giving away dummies with no electronics in for free and if you went to their stand you could buy a real one. These were opaque and purple though, so it's not what you've got, but yours might be a dummy version of somebody else's product. ------- jeremyp We're going to need a bigger boat!

Wow, this has got to have potential http://www.wherify.com/prod_watches.htm I particularly like the 911 feature. Imagine that in the hands of a two year old toddlet when you've forgotten to turn it off. ------- jeremyp We're going to need a bigger boat!

Unbelievable ------- jeremyp We're going to need a bigger boat!

It doesn't seem like a particularly good April Fools joke - if that's what it was. I was looking forward to him hacking the site and turning it into bondage.com ------- jeremyp We're going to need a bigger boat!

It doesn't seem like a particularly good April Fools joke - if that's what it was. I was looking forward to him hacking the site and turning it into bondage.com ------- jeremyp We're going to need a bigger boat!

Your mail client should somewhere have an option to view the message headers. If you select that, among the many things you'll see will be a number of "received" headers. Each mail server that the message passes through will put a new received header in with a time stamp which you can use to figure out where the delays are. My guess would be that it is at the geocaching.com end, there have been signs over the last few days that they are suffering some performance issues. The answer to your question about can e-mail get held up is "yes". It's quite rare nowadays, but it does happen. quote:Originally posted by The Northumbrian: On sunday march the 3rd. I re-hid Hot Dog Man in North Yorkshire at RISER, it was found on the same day by The shooteroos, I like to follow travel bugs that I have found and re-hid as most of you like to do the same, I was only notified this morning that he had been found on 3rd March My question is, can email notifications get held-up in the post , the same as surface mail? or there other problems that arise with automated notificacions? Happy Easter Caching. Nige ------- jeremyp We're going to need a bigger boat!

Ignore my last post. An e-mail came through with a URL on it. ------- jeremyp We're going to need a bigger boat!

Can you post a URL please (for accessing the group page). ------- jeremyp We're going to need a bigger boat!

quote:Originally posted by Chris n Maria: I've been spending quite a lot of time looking at the OS site lately and read some very dull publications with huge formulas in them. The conclusion I have come to is that you won't find a map based on WGS84 of the UK....I could be wrong but here is what I think I have worked out. Actually, I found all that stuff quite interesting Last time I went sailing I noticed that all the navigational charts we had were WGS84 except for the ones around Cornwall. I guess they were going through a process of converting from OSGB to WGS84 at the time. As almost all mapping data of the UK comes from the OS and they aren't changing just yet, your comment is probably right, but for most purposes irrelevant, you just make sure your GPSr uses the right datum. quote:Heights add another level of complexity as they are relative to a complex mathematical shape known as the Geoid for WGS84 but OS was originally based against Mean Sea level in Newlyn at cornwall. Aparentley sea level round the UK is below sea level - Go figure! The mean sea level at Newlyn only defines the zero for heights on OS maps. Heights in the UK still use the geoid which is defined as a surface with a constant gravitational field. If you map out a level surface it *will* be parallel to the geoid which varies depending on the density of the Earth's crust. A datum such as WGS84 is essentially arbitrary (we can put the prime meridian anywhere). The geoid depends on the physical characteristics of the Earth. quote:Conversion between the 2 systems is a non-trivial operation which in the case of OS to WGS84 involves Guessing the co-ords and iterating till it gets to the right answer. Well not exactly. What you do is take your coordinates and convert them to a set of cartesian (x, y, z) coordinates relative to your starting datum. This is easy, there are three mathematical formulae to plug your coordinates into. You then transform your cartesian coordinates to cartesian coordinates in the ending datum. This is just a matrix multiplication - hard for a human, but easy for a computer. Then you convert your cartesian coordinates to the lat/long in the final system. This is where the "Guessing" comes in and it's the same whether your going WGS84 to OSGB36 or the other way around. In fact it's still a relatively easy process if you have a computer to help you out. One of the regular contributors (sorry I forget who it is) here has done it in Excel. ------- jeremyp We're going to need a bigger boat!

quote:Originally posted by Chris n Maria: I've been spending quite a lot of time looking at the OS site lately and read some very dull publications with huge formulas in them. The conclusion I have come to is that you won't find a map based on WGS84 of the UK....I could be wrong but here is what I think I have worked out. Actually, I found all that stuff quite interesting Last time I went sailing I noticed that all the navigational charts we had were WGS84 except for the ones around Cornwall. I guess they were going through a process of converting from OSGB to WGS84 at the time. As almost all mapping data of the UK comes from the OS and they aren't changing just yet, your comment is probably right, but for most purposes irrelevant, you just make sure your GPSr uses the right datum. quote:Heights add another level of complexity as they are relative to a complex mathematical shape known as the Geoid for WGS84 but OS was originally based against Mean Sea level in Newlyn at cornwall. Aparentley sea level round the UK is below sea level - Go figure! The mean sea level at Newlyn only defines the zero for heights on OS maps. Heights in the UK still use the geoid which is defined as a surface with a constant gravitational field. If you map out a level surface it *will* be parallel to the geoid which varies depending on the density of the Earth's crust. A datum such as WGS84 is essentially arbitrary (we can put the prime meridian anywhere). The geoid depends on the physical characteristics of the Earth. quote:Conversion between the 2 systems is a non-trivial operation which in the case of OS to WGS84 involves Guessing the co-ords and iterating till it gets to the right answer. Well not exactly. What you do is take your coordinates and convert them to a set of cartesian (x, y, z) coordinates relative to your starting datum. This is easy, there are three mathematical formulae to plug your coordinates into. You then transform your cartesian coordinates to cartesian coordinates in the ending datum. This is just a matrix multiplication - hard for a human, but easy for a computer. Then you convert your cartesian coordinates to the lat/long in the final system. This is where the "Guessing" comes in and it's the same whether your going WGS84 to OSGB36 or the other way around. In fact it's still a relatively easy process if you have a computer to help you out. One of the regular contributors (sorry I forget who it is) here has done it in Excel. ------- jeremyp We're going to need a bigger boat!

quote:Originally posted by dawnrazor: Much as I'd love to disagree with Jeremy on this thread I have the sad misfortune of being a Gillingham supporter. As any Arsenal fan will testify, this renders me totally unable to even show my face in public when Arsenal fans are around for fear of ridicule and hilarity. Nothing to see here, move along now, roll on next season. Eddie I don't think you have anything to fear from Arsenal fans. Gillingham and Arsenal are in such different leagues (literally) that their paths rarely cross . When I was at University I did know somebody from Gillingham, which was therefore his second team. He was doubly blighted because his first team was Newcastle United and this was in the pre-Keegan days when they were truely poor. ------- jeremyp We're going to need a bigger boat!

quote:Originally posted by dawnrazor: Much as I'd love to disagree with Jeremy on this thread I have the sad misfortune of being a Gillingham supporter. As any Arsenal fan will testify, this renders me totally unable to even show my face in public when Arsenal fans are around for fear of ridicule and hilarity. Nothing to see here, move along now, roll on next season. Eddie I don't think you have anything to fear from Arsenal fans. Gillingham and Arsenal are in such different leagues (literally) that their paths rarely cross . When I was at University I did know somebody from Gillingham, which was therefore his second team. He was doubly blighted because his first team was Newcastle United and this was in the pre-Keegan days when they were truely poor. ------- jeremyp We're going to need a bigger boat!

quote:Originally posted by dawnrazor: I reckon that's excellent, anyone know what that will mean for the existing end-user hardware that we've all got ? Either way its a good thing (imho). Eddie According to the ESA web site, the satellites will be interoperable with the US GPS system and existing equipment will be able to use satellites from either system in any combination. It does say that to get the 1metre accuracy, you'll need a dual frequency receiver. As the whole thing doesn't come on line until 2008, there is no immediate worry about what receiver we'll need. ------- jeremyp We're going to need a bigger boat!

Not so much a rival. They were talking about accuracies down to 1 metre, so more a superior replacement. ------- jeremyp We're going to need a bigger boat!