[ncl-talk] 回复：Re: didn't show all markers
Mary Haley
haley at ucar.edu
Tue Nov 14 13:14:08 MST 2017
Zhen,
The reason why this is so hard to debug is that I can't run your program in
order to print out values before they are passed to the plotting functions.
The marker values you printed all have the level equal to 85000, but the
range of your data is 100 to 1000. If you really are trying to plot the
marker at value 85,000, then this is definitely out-of-range. This value
needs to be converted to hPa (multiply by 0.01) before you try to add these
markers.
The thing I don't understand is why you have other markers on the plot that
are showing up. Are these markers in hPa units?
--Mary
On Mon, Nov 13, 2017 at 2:47 PM, 刘振 <286909655 at qq.com> wrote:
> Hi Mary,
>
> Thanks for your reply. But I am sorry I don't have the authority to copy
> the data. Maybe I have to leave this behind. Thanks for your really helpful
> tips and advices. I really appreciate it.
>
> Best regards,
> zhen
>
> ------------------
> 刘振
> 中山大学
> 环境科学与工程学院
> 大气科学系
> Phone: +86-15013246049 <+86%20150%201324%206049>
> Liu Zhen
> Department of Atmospheric Science
> School of Environmental Science and Engineering
> Sun Yat-sen University
> Email address: liuzhen9 at mail2.sysu.edu.cn
>
>
>
> ------------------ 原始邮件 ------------------
> *发件人:* "Mary Haley";<haley at ucar.edu>;
> *发送时间:* 2017年11月14日(星期二) 凌晨5:44
> *收件人:* "刘振"<286909655 at qq.com>;
> *抄送:* "ncl-talk"<ncl-talk at ucar.edu>;
> *主题:* Re: [ncl-talk] 回复：Re: didn't show all markers
>
> Zhen,
>
> The only way I can look at this is if you provide your full script and
> data, so I can run it here.
>
> If the data file is not large, then can use our ftp:
>
> http://www.ncl.ucar.edu/ftp_files.shtml
>
> If it is large (say > 500 MB), then please provide the file somewhere that
> I can download it.
>
> Thank you,
>
> --Mary
>
>
>
> On Fri, Nov 10, 2017 at 12:23 PM, 刘振 <286909655 at qq.com> wrote:
>
>> Hi Mary,
>>
>> Thank you so much for your cleaning tips (I have changed t
>> he script related with tip 1 in the last email based on your
>> tips before), which are very useful. Sometimes I indeed
>> find the script is quite slow. Yes, I do still have
>> problems with the dots. The following figure shows parts
>> of the dots are not shown on the plot (print("lat / plev =
>> "+lat(indices(ip,1))+"/"+plev(indices(ip,0)))). The dots
>> are not out of the range of the X and Y axes. I still
>> cannot figure out what is going on and need your further help. Thanks.
>> (0) lat / plev = -25/85000
>> (0) lat / plev = -23/85000
>> (0) lat / plev = -21/85000
>> (0) lat / plev = -19/85000
>> (0) lat / plev = -17/85000
>> (0) lat / plev = -15/85000
>> (0) lat / plev = -11/85000
>> (0) lat / plev = -3/85000
>> (0) lat / plev = -1/85000
>> (0) lat / plev = 3/85000
>> (0) lat / plev = 5/85000
>> (0) lat / plev = 7/85000
>> (0) lat / plev = 13/85000
>> (0) lat / plev = 15/85000
>> (0) lat / plev = 27/85000
>> (0) lat / plev = 45/85000
>> (0) lat / plev = 47/85000
>> (0) lat / plev = 59.00000000000001/85000
>> (0) lat / plev = 61/85000
>> (0) lat / plev = 69/85000
>> (0) lat / plev = 73/85000
>> (0) lat / plev = 75/85000
>> (0) lat / plev = 77/85000
>>
>> Best regards,
>> zhen
>>
>>
>> ------------------刘振
>> 中山大学
>> 环境科学与工程学院
>> 大气科学系
>> Phone: +86-15013246049
>> Liu Zhen
>> Department of Atmospheric Science
>> School of Environmental Science and Engineering
>> Sun Yat-sen University
>> Email address: liuzhen9 at mail2.sysu.edu.cn
>>
>> ---原始邮件---
>> 发件人:"Mary Haley"<haley at ucar.edu>
>> 发送时间:2017年11月11日(星期六) 凌晨1:33
>> 收件人:"刘振"<286909655 at qq.com>;
>> 主题: [ncl-talk] didn't show all markers
>>
>>
>> Zhen,
>>
>> Which markers in particular are not showing up? It's too
>> hard for us to look at your output and try to figure out
>> which dots are on the plot and which are not.
>>
>> Also, it's very unlikely that NCL would just drop some o
>> f those dots.  There has to be something else going on,
>> like the dots are out-of-range of the limits of your X and/or Y axes.
>>
>> [1] Clean coding tip: you do not need to loop across each in
>> dex of the array to add each dot, if you are drawing them
>> all with the same color and size. Instead of this code:
>>
>> dot=new((/dimsizes(forc),dimsizes(lat)*dimsizes(plev)/),graphic)
>> do iex=0,dimsizes(forc)-1
>>  . . .
>>
>>   do ip=0,npts-1
>>     dot(iex,ip) = gsn_add_polymarker(wks,plot(iex)
>> ,lat(indices(ip,1)),plev(indices(ip,0)),resmarker)
>>   end do
>>
>> you can have this code:
>>
>> dot=new((/dimsizes(forc),dimsizes(lat)/),graphic)
>> do iex=0,dimsizes(forc)-1
>>  . . .
>>   dot(iex) = gsn_add_polymarker(wks,plot(iex),lat(indic
>> es(:,1)),plev(indices(:,0)),resmarker)
>>
>>
>> This will run faster, because each call to gsn_add_polymarke
>> r causes the creation of an internal object, and if you
>> do this for each single dot, you are going to end up using
>> more memory and taking more time.
>>
>> [2] Clean coding tip: if you find yourself calling "dimsizes
>> " on the same variable multiple times, I suggest
>> saving it to a variable so it can save you some typing:
>>
>> For example:
>>
>> var_run = new((/dimsizes(forc),dimsizes(ens),dimsizes(year),
>> 23,90/),"float")
>> var_djf_clim =  new((/dimsizes(forc),dimsizes(ens),23,
>> 90/),"float") ; 10 years          &
>> #xA0;                  
>> rc_m = new((/dimsizes(forc),23,90/),"float")
>> do iv=0,dimsizes(vars)-1
>>
>> could be changed to:
>>
>> nforc = dimsizes(forc)
>> nens  = dimsizes(ens)
>> nyear = dimsizes(year)
>> nvars = dimsizes(vars)
>> var_run = new((/nforc,nens,nyear),23,90/),"float")
>> var_djf_clim =  new((/nforc,nens),23,90/),"float") ;
>> 10 years              &#x
>> A0;              
>> rc_m = new((/nforc,23,90/),"float")
>> do iv=0,nvars-1
>> I don't know what "23" and "90" are supposed to represen
>> t, but it would be good to also assign these to variables
>> as well, so if you need to change the 23 or 90 values
>> later, you can just do it in one place.
>> [3] Clean coding tip: you don't need to use "new" to pre
>> allocate an array that is getting calculated by a function.&
>> #xA0; You have this code:
>> rc_m = new((/dimsizes(forc),23,90/),"float")
>> rc_m = regCoef_n(year,var_ens,0,1)
>> Remove the "new" line as it is not needed.  The regCoef
>> _n function will allocate the memory for you, as does every
>> single NCL function.
>> If you continue to have problems with the dots, please be
>> more specific about which dots are not showing up.
>> --Mary
>>
>>
>> On Thu, Nov 9, 2017 at 2:56 PM, 刘振 <286909655 at qq.com> wrote:
>>
>>
>> Dear all,
>>
>>   I am using ncl 6.4 to plot and want to print dot when
>> value pass student t test using function gsn_add_polymak
>> er (script and figure attached, i.e. 850hPa). But the dots
>> are only printed at some levels (not all levels) in
>> vertical direction. Actually, I got 23 pressure levels for
>> my data and indeed some dot are not printed on the plot
>> when I print the indices passing significance level (
>> see log files attached). Could you please help me to so
>> lve this problem. Thanks.
>>
>>
>> zhen
>>
>> ------------------
>> 刘振
>> 中山大学
>> 环境科学与工程学院
>> 大气科学系
>> Phone: +86-15013246049
>> Liu  Zhen
>> Department of Atmospheric Science
>> School of Environmental Science and Engineering
>> Sun Yat-sen University
>> Email address: liuzhen9 at mail2.sysu.edu.cn 
>>
>>
>>  
>>
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