Dot plot screen resolution

Error:

warning('Bioinfo:seqdotplot:imageTooBigForScreen',...
      ['Match matrix has more points than available screen pixels.'...
      '\n           Scaling image by factors of %d in X and %d in Y'],...
        downSampleX,downSampleY)

I'm attempting to create dot plots that compare sequence similarity, however I'm getting the above error message. How can I compensate for this?

Code:  

%5.Get sequence for Nucleotide Dotplot
AHSVNM1194H5N1 = getgenbank('EF541402', 'SequenceOnly', true)
AHSINS5H5N1 = getgenbank('EF541394', 'SequenceOnly', true)

%6. Create Dotplots
seqdotplot(AHSVNM1194H5N1,AHSINS5H5N1,11,7)
title('Dot Plot of A/Viet Nam/1194/04 & A/Indonesia/5/05')
ylabel('A/Viet Nam/1194/05 H5N1');xlabel('A/Indonesia/5/05 H5N1')

[Walter Roberson]

Use a higher screen resolution?

Answer 1

[Lucio Cetto]

You could visualize the dot plot by regions:

 seqdotplot(AHSINS5H5N1(1:500),AHSINS5H5N1(1:500),11,7)
 seqdotplot(AHSINS5H5N1(501:1000),AHSINS5H5N1(501:1000),11,7)
 seqdotplot(AHSINS5H5N1(1000:end),AHSINS5H5N1(1000:end),11,7)

or if it is just the warning message what annoys you and you are OK with the subsampling, you can do:

 warnStat = warning('off','bioinfo:seqdotplot:imageTooBigForScreen');
 seqdotplot(AHSINS5H5N1,AHSINS5H5N1,11,7)
 warning(warnStat)

The last would allow you to visualize repetitive patterns that may exist in your sequences.