building your web site ats 315. your project make a web site that shows plots that you generated!...
TRANSCRIPT
Building Your Web Site
ATS 315
Your Project
Make a web site that shows plots that YOU generated!
Plots should regenerate every hour!
Step 1: Decide what plots you want to show
Pick out a couple of charts that can be made with the programs we have written this semester.
Don’t go nuts—maybe 4 or 5 plots at most!
Step 2: Make special versions of your programs with NO interaction!
Your programs shouldn’t require anyone to choose a variable, domain, contour interval or anything like that.
Each program should produce ONE chart!
Step 3: Modify these programs so that they produce an XWD file
XWD = “XWindow Dump” a file format for images, similar to GIF
We’ll learn how to do this later.
Step 4: Create a “script” that runs these programs.
“scripts” – little programs that perform unix commands.
We’ll learn more about this later.
Step 5: Set up a “crontab” that runs your script each hour
crontabs are scripts that execute on a schedule.
We’ll learn more about this later.
Step 6: Make an HTML page to display your output
You already know how to do this!
The Steps:
1. Decide what you’ll show
2. Versions w/o interaction
3. Produce XWD files
4. Set up scripts
5. Set up crontabs
6. Write HTML code
Step 3: Produce XWD files of your maps
/export/home/schragej/X/xwdjms a special version of a standard unix program “xwd” captures a graphics window and saves it as a .xwd
file no beeping!
xwdjms –name myplot
Step 3: Produce XWD files of your maps
/export/home/schragej/X/xwdjms a special version of a standard unix program “xwd” captures a graphics window and saves it as a .xwd
file no beeping!
xwdjms –name myplot
The name of the graphics window that you opened!
Don’t use any spaces!
Step 3: Produce XWD files of your maps
xwdjms uses “printf” to dump everything it does to the screen.
You need to “capture” this to a file!
xwdjms –name myplot > image.xwd
Step 3: Produce XWD files of your maps
xwdjms is a UNIX command, not a C command!
system(“ ”);
Step 3: Produce XWD files of your maps
xwdjms is a UNIX command, not a C command!
system(“ ”);
Example: system(“rm *.dat”);
Step 3: Produce XWD files of your maps
system(“/export/home/schragej/X/xwdjms –name myplot > image.xwd”);
Step 3: Produce XWD files of your maps
system(“/export/home/schragej/X/xwdjms –name myplot > image.xwd”);
Also, turn off the ghold!!!!!!!!
Step 3: Produce XWD files of your maps
system(“/export/home/schragej/X/xwdjms –name myplot > image.xwd”);
Also, turn off the ghold!!!!!!!!
Still more problems…
Step 3: Produce XWD files of your maps
Draw the mapDraw the datasystem(“xwdjms…”);
Even though you’ve given the orders to draw all the lines and all the data, the graphics might not “keep up”…
Step 3: Produce XWD files of your maps
Draw the mapDraw the datasystem(“xwdjms…”);
…when you call xwdjms, it’s possible/likely that the picture isn’t done yet!
You’ll capture a partial image!
Step 3: Produce XWD files of your maps
Draw the mapDraw the dataXFlush(display);system(“xwdjms…”);
You need to XFlush the display.
Step 3: Produce XWD files of your maps
Draw the mapDraw the dataXFlush(display);system(“xwdjms…”);
You need to XFlush the display.
Step 3: Produce XWD files of your maps
Draw the mapDraw the dataXFlush(display);system(“xwdjms…”);
Display *display;display = gget_xdisplay();
Step 3: Produce XWD files of your maps
Display *display;display = gget_xdisplay();Draw the mapDraw the dataXFlush(display);system(“xwdjms…”);
The Steps:
1. Decide what you’ll show
2. Versions w/o interaction
3. Produce XWD files
4. Set up scripts
5. Set up crontabs
6. Write HTML code
Step 4: Create a “script” that runs these programs.
“scripts” – little programs that perform unix commands.
An example of a script:
Step 4: Create a “script” that runs these programs.
An example of a script:
#! /bin/csh –f
rm *.gif
mv sample.data my.data
Step 4: Create a “script” that runs these programs.
All scripts start with “pound bang space slash bin slash sea ess aich space minus eff”
#! /bin/csh –f
rm *.gif
mv sample.data my.data
Step 4: Create a “script” that runs these programs.
Everything after that just runs as if you typed it at the keyboard in Unix.
#! /bin/csh –f
rm *.gif
mv sample.data my.data
Step 4: Create a “script” that runs these programs.
Everything after that just runs as if you typed it at the keyboard in Unix.
#! /bin/csh –f
setenv DISPLAY wx-sun1:0.
rm *.xwd
MakeTempContours
/opt/sfw/bin/convert image.xwd temperature.gif
mv temperature.gif public_html
Step 4: Create a “script” that runs these programs.
Change the execution privileges on your script:
chmod a+x MyScript
Test it.
The Steps:
1. Decide what you’ll show
2. Versions w/o interaction
3. Produce XWD files
4. Set up scripts
5. Set up crontabs
6. Write HTML code
Step 5: Set up a “crontab” that runs your script each hour
crontabs are scripts that execute on a schedule.
To edit a crontab, you need to have set the EDITOR variable to your favorite editor:
setenv EDITOR vi setenv EDITOR pico
Step 5: Set up a “crontab” that runs your script each hour
start editing:crontab –e
Every line of the crontab schedules one task to be run repeatedly.
There are 6 entries on every line:
Step 5: Set up a “crontab” that runs your script each hour
The first entry is the MINUTE of each hour during which to run your job.
15 * * * * /export/home/schragej/MyScript
Adams 1
Affelt
Augustyn 2
Campbell 3
Craft 4
Dea 5
Fontaine 6
Franks 7
Hollibaugh 8
Hyda 9
Karr 10
Malone 11
Novella 12
Robinson 13
Selin 14
Smoliak 15
Taylor 16
Wilson 17
Step 5: Set up a “crontab” that runs your script each hour
Entries 2, 3, 4, and 5 are the hour, day, day of week and day of month on which to run the job.
A star means “every”.
15 * * * * /export/home/schragej/MyScript
Step 5: Set up a “crontab” that runs your script each hour
The sixth entry is the name of your script, with the full path name!
If your script prints ANYTHING to the screen, you’ll need to include:
> /dev/null
or the output will be emailed to you!
15 * * * * /export/home/schragej/MyScript
The Steps:
1. Decide what you’ll show
2. Versions w/o interaction
3. Produce XWD files
4. Set up scripts
5. Set up crontabs
6. Write HTML code
Your (Last!) Assignment
Impress me with a web site with weather charts that refresh hourly!