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-rw-r--r--README41
1 files changed, 24 insertions, 17 deletions
diff --git a/README b/README
index bb6822e..4669ed9 100644
--- a/README
+++ b/README
@@ -24,11 +24,11 @@ compute the viewing paramteres from the given data points.
Requirements
------------
-* fltk-1.1.x <http://www.fltk.org>
-* libtiff <http://www.remotesensing.org/libtiff/>
-* libjpeg <http://www.ijg.org/>
-* exif utility <http://libexif.sourceforge.net/>
-* GSL - GNU Scientific Library <http://www.gnu.org/software/gsl/>
+* [fltk-1.1.x](http://www.fltk.org)
+* [libtiff](http://www.remotesensing.org/libtiff/)
+* [libjpeg](http://www.ijg.org/)
+* [exif utility](http://libexif.sourceforge.net/)
+* [GSL - GNU Scientific Library](http://www.gnu.org/software/gsl/)
* gipfel works on UNIX-like systems (e.g. Linux, *BSD and probably others)
Installation
@@ -66,8 +66,8 @@ If you have positioned at least two mountains, you can click on
the "comp" button in the control window to compute the
parameters of the picture.
-You may also want to have a look at the screen video at
-<http://www.ecademix.com/JohannesHofmann/gipfel.avi>
+You may also want to have a look at the
+(screen video)[http://www.ecademix.com/JohannesHofmann/gipfel.avi]
for an example session.
Data File
@@ -83,18 +83,25 @@ Each line must contain the following values separated by a comma:
The following line is a valid example:
SMTSBG,Simetsberg,,47.56617,11.25358,1836
-Fortunately, there is a great website <http://www.alpin-koordinaten.de>,
+Fortunately, there is a [great website](http://www.alpin-koordinaten.de),
where you can download a suitable file containg quite a lot of data mostly
concerning the alps:
Click on the "Suchen" button and the click on the diskette symbol below
the first table then select "Fugawi 3 TXT" format and click on "Download".
Obviously you can easily add your own entries to the data file or add them
-to the database at <http://www.alpin-koordinaten.de>.
+to the database at http://www.alpin-koordinaten.de.
-Thanks to the kind permission of the creators of
-<http://www.alpin-koordinaten.de>, the standard gipfel tarball includes
-a default datafile generated by <http://www.alpin-koordinaten.de>.
+Thanks to the kind permission of
+[Jonathan de Ferranti](http://www.viewfinderpanoramas.org/) and the
+creators of http://www.alpin-koordinaten.de, the standard gipfel
+tarball includes a default datafile generated from these two sources.
+
+For the USA, you can download a data file
+from [USGS](http://geonames.usgs.gov/domestic/download_data.htm)
+The file can be transformed for gipfel with
+ awk 'BEGIN {FS="|"; OFS=","};
+ $3 == "Summit" {print "usgs_" $1, $2,"" , $10, $11, $16};'
GPS Tracks
----------
@@ -130,8 +137,8 @@ are displayed in blue.
Refraction
----------
Refraction caused by temperature and density gardients in the atmosphere is
-taken into account according to the approximation described by Tom Chester in:
-<http://tchester.org/sgm/analysis/peaks/refraction_calculation.html>
+taken into account according to the approximation described by
+[Tom Chester](http://tchester.org/sgm/analysis/peaks/refraction_calculation.html).
under the assumption of a temperature change of 6.5°C per 1000m and a
temperature T0 at view point level of 10°C.
@@ -213,10 +220,10 @@ Troubleshooting
Acknowledgements
----------------
-Thanks to the guys from <http://www.alpin-koordinaten.de> for their public
+Thanks to the guys from http://www.alpin-koordinaten.de for their public
GPS database.
-Also have look at their other site <http://www.alpen-panoramen.de>.
-In newer versions I use maxima <http://maxima.sourceforge.net/> for
+Also have look at their other [site](http://www.alpen-panoramen.de).
+In newer versions I use [maxima](http://maxima.sourceforge.net/) for
symbolic computation and code generation.
I also want to thank my brother Martin for his suggestions and the
discussions.