Topic: Sunposa background black sun

[CarlosLSev]

Hello, my sunposa.php file looks like this. With a black background in the image of the sun, if I upload jpsun.png to ./cache it is solved but when it is generated again it comes out wrong again. Suggestions?
 [ You are not allowed to view attachments ]

[Vasco]

I had this with a GD function problem: running .../sunposa.php?debug=y shows that the GD library is available.

Think you might have to wait for Ken to see this 

[CarlosLSev]

------------------------------------------------------------------
sunposa.php Version 3.60 - 11-Sep-2024
..debug=y debugging output for sunposa.php.  PHP version 7.4.33

  Status of needed built-in PHP functions:
  function 'imagecreatefrompng()'  is available
  function 'imagecreatefromgif()'  is available
  function 'imagecreatetruecolor()'  is available
  function 'imagecolortransparent()'  is available
  function 'imagettfbbox()'  is available
  function 'imagettftext()'  is available
  function 'gregoriantojd()'  is available
  function 'curl_init()'  is available
  function 'curl_setopt()'  is available
  function 'curl_exec()'  is available
  function 'curl_error()'  is available
  function 'curl_getinfo()'  is available
  function 'curl_close()'  is available

  Settings used:
  lat='37.396306', lon='-5.718556', tz='Europe/Madrid'
  cacheFileDir='./cache/'
  moonImagePath='./moonimg/NH-moon'
  legendColor='orange' maxElevation='90'
  jpgraph location='./jpgraph-4.4.2-src-only/'
  Using internal calculations for moon data.
  moon image cache './cache/jpmoon.png exists. Updated 2024-12-03 05:39:16
  sun  image NASA  './cache/tempImg.gif exists.  Updated 2024-12-03 15:33:01
  sun  image cache './cache/jpsun.png exists.  Updated 2024-12-03 15:33:01

  GD Library is available and has these capabilities:
    GD Version: 2.3.3
    FreeType Support: true
    FreeType Linkage: false
    GIF Read Support: true
    GIF Create Support: true
    JPEG Support: true
    PNG Support: true
    WBMP Support: true
    XPM Support: true
    XBM Support: true
    WebP Support: true
    BMP Support: true
    TGA Read Support: true
    JIS-mapped Japanese Font Support: false

[CarlosLSev]

Hello according to the script
FreeType Link: false
Next phpinfo FreeType support enabled
FreeType link with free type
Hello this
sudo apt-get install libfreetype6 libfreetype6-dev
sudo apt install --reinstall php7.4-gd
systemctl restarts apache2
I'm not sure if freetype is the problem

[Vasco]

I don't think so... Mine was a problem with one particular GD function, see https://www.wxforum.net/index.php?topic=47370.msg477393#msg477393

Hope that Ken can sort you out 

[CarlosLSev]

Hello, how do I use php 7.4.33? I have modified the jpgraph.php file and I left it before the modification that Ken made (it can be seen that he left it corrected in the version that he uploaded) for php 8+ I am going to try it tomorrow and if not I will leave it as was

The same correction for php 8 does not work well for php 7, although I doubt it.

[saratogaWX]

It is a problem with the imagecolortransparent() GD function not behaving normally with your GD installation.  It is likely that is the problem with GD Version: 2.3.3 on PHP 7.4.33.

A function within sunposa.php uses that GD function to create a mask around the sun image from NASA which has a black background to change the image outside a circle into transparent for the PNG image.

I'd suggest that you update to PHP 8+ to fix the issue.

[CarlosLSev]

After updating to 8.1 it already seems to work, thanks Ken

[CarlosLSev]

Hello, it has been working but the black background has appeared again, also the moon does not correspond, I am going to investigate

[CarlosLSev]

Today I decided to update PHP to 8.4.1, and I have re-uploaded the complete sunposa script, the result is the same black background behind the sun and moon does not correspond even though the latitude and longitude and time zone are correctly configured

https://www.meteoviso.es/wxastronomy.php

[saratogaWX]

Try changing Settings.php from

$SITE['latitude']      = '37.396306';    //North=positive, South=negative decimal degrees
$SITE['longitude']      = '-5.718556';  //East=positive, West=negative decimal degrees

to

$SITE['latitude']      = 37.396306;    //North=positive, South=negative decimal degrees
$SITE['longitude']      = -5.718556;  //East=positive, West=negative decimal degrees

also when running sunposa.php?force=1 to reload the cache it has the following error:

<b>Warning</b>:  imagepng(./cache/jpmoon.png): Failed to open stream: Permission denied in <b>/var/www/html/sunposa.php</b> on line <b>976</b><br />

so check permissions on your cache/ directory to allow files to be written.

[CarlosLSev]

Hello, I removed the single quotes and it seems to behave the same, I also removed some decimals to test.
I have to be very clumsy. I even uploaded the full script from https://github.com/ktrue/SunMoon-graph

PD
Ok, thanks Ken the moon now seems to be showing well, let's wait for the sun tomorrow

[CarlosLSev]

The sun continues with the black background.

[CarlosLSev]

  help me!!

[zeppline]

look in include-wxastronomy file a line 86 thru 102 you can change sun image. I have $sunC128, try different images.

[saratogaWX]

help me!!

I'm working on an update that will use a different method to mask the sun image and have a transparent background.

[saratogaWX]

Ok.. got a new version to test.  It seems the issue was with making the jpsun.png image keep transparency.
I've switched to using a function to vignette the sun image and save as jpsun.gif and that seems to work.

Please try V3.70 sunposa.php from https://saratoga-weather.org/sunposa.php?sce=view
and let me know if that works.
Note: you'll need permissions on the cache directory to allow creation of jpsun.gif the first time it is run.

[CarlosLSev]

Now it looks like this, it still has something behind it
 [ You are not allowed to view attachments ]

[saratogaWX]

Yes, that is supposed to be transparent, not shown.

Your actual image shows the transparent failure.
Your GD library is GD Version: 2.3.3 with  PHP version 8.4.1
Mine is GD Version: bundled (2.1.0 compatible) on saratoga-weather.org with PHP version 8.1.31 and works fine
My actual image looks transparent.

My test (local system) uses GD Version: bundled (2.1.0 compatible) with PHP version 8.2.0 and it works fine too,

I'm suspecting that GD 2.3.3 may have a bug with handling transparency.  Try the download from
https://saratoga-weather.org/sunposa.php?sce=view and upload it again.  I tweaked the code a bit
to use imagecopyresized instead of imagecopyresampled for the sun + stuff to preserve alpha.

After upload, load https://www.meteoviso.es/sunposa.php?force=1 to reload the Sun image with the updated code.

[saratogaWX]

Looks like your script is blowing up.. I suspect that the permissions on your ./cache/ directory disallow create of jpsun.gif

Download the image from the above post, upload to ./cache/jpsun.gif and the script should stop blowing up.

[CarlosLSev]

The files are created, if I delete them and execute force=1 it gives an error, but they are created again, if I execute debug=y it is executed and displayed on the screen but something prevents the script from displaying the image, cache has permissions 777

[saratogaWX]

Your sunposa.php has

""<?php

Remove the

""

before the <?php

But.. even after that change, your cache file doesn't have the expected transparent background:



while mine shows as



Sigh...

[CarlosLSev]

Sorry for the error, what you indicate still happens.

[saratogaWX]

Ok, one more tweak to the code.. download sunposa.php and upload to your site.

[CarlosLSev]

Still the same, I'm embarrassed Ken that you take so much time on the script because of me. Although I will continue testing if necessary