I have a problem with debugging my ROS code. I can't display an image to verify proper tracking.
Is there an easy way to display images from a custom message using a terminal, or do I have to write a new node that will display the image?
My message:
std_msgs/Header header
uint64[] object_ids
uint16[] class_ids
float32[] confs
int16[] x_coords
int16[] y_coords
int16[] bb_width
int16[] bb_hight
sensor_msgs/Image source_image
I want to display source_image coming from a topic /tracker_topic.
I tried using topic_tools relay_field, but I'm using python 3 which doesn't use Unicode, and I'm getting errors because of that.
Related
I'm using starMicronics SDK for printing a slip. I'm facing the issue that actionPrintText(_ content: String) tag is used for printing the text but this is not available in TSP100IIIBI series
so what is the alternative for this tag that will work on TSP100IIIBI MOdel https://star-m.jp/products/s_print/sdk/starxpand/manual/en/ios-swift/api-reference/star-xpand-command/printer-builder/action-print-text.html
My application is trying to insert a bunch of images to google drive sheet using google app script.
The script method is calling from a Rails app as following:
#app_script.run_script(script_id, request)
The script method is trying to fetch the image through the id and insert it to the sheet.
var srcfile = DriveApp.getFileById(object.image_file_id);
srcfile.setSharing(DriveApp.Access.ANYONE_WITH_LINK, DriveApp.Permission.VIEW);
var image = SpreadsheetApp.openById(object.spreadsheet_id).getSheetByName(object.sheet_name).insertImage(Drive.Files.get(srcfile.getId()).webContentLink, object.column, object.row);
The problem is coming intermittently with the response error from google script:
Exception: Error retrieving image from URL or bad URL: https://drive.google.com/uc?id=1yZULGInEcjQ_nA4j_Nmy6F2e3JcYnLFP&export=download
Note that I can download the image successful if I just copy the link and paste it to browser.
The image file and its parent folder are public share.
It seem hard to detect the problem when it does not always happen.
For those who concern about my script, it is here
Exception: Error retrieving image from URL or bad URL
This is a common error message when the image size is too big.
See here for more information.
You need to recuce the image size - either manually or programmatically - before inserting.
UPDATE
If the suggestion above does not solve your issue, implement the following workaround:
Instead of inserting the image by its webContentLink with the method insertImage(url, column, row) , use the method insertImage(blobSource, column, row):
var image = SpreadsheetApp.SpreadsheetApp.openById(object.spreadsheet_id).getSheetByName(object.sheet_name).insertImage(DriveApp.getFileById(srcfile.getId()).getBlob(), object.column, object.row);
This should solve the issue.
I have a jaspersoft report (line chart built in studio), and I want the data series in the chart to be hyperlinks that drilldown to open a dashboard.
Based on this wiki page I was able to create Reference hyperlinks so that clicking on any data series in the chart opens the correct dashboard. But I cannot get the Input Control parameters to pass correctly.
The URL when I load my dashboard directly from the repository (not by clicking hyperlinks in my line chart report) is
http://ddevrpt:8080/jasperserver-pro/dashboard/viewer.html#%2Fpublic%2FP2%2FMidcap%2FFinancial%2FDashboards%2FWell_Profile
The URL generated when i do not include input controls in my hyperlink reference expression is the same:
http://ddevrpt:8080/jasperserver-pro/dashboard/viewer.html#%2Fpublic%2FP2%2FMidcap%2FFinancial%2FDashboards%2FWell_Profile
JRXML:
<itemHyperlink hyperlinkType="Reference">
<hyperlinkReferenceExpression><![CDATA["./dashboard/viewer.html#%2Fpublic%2FP2%2FMidcap%2FFinancial%2FDashboards%2FWell_Profile"]]></hyperlinkReferenceExpression>
</itemHyperlink>
The URL generated when i do include Input Control parameter values is different, but still loads the dashboard empty (without passing the parameter values):
http://ddevrpt:8080/jasperserver-pro/dashboard/viewer.html?hidden_WellConcatenated_0=49005478.1:%20DILTS%2044-15%20TH&hidden_OccurrenceDate_1=2015-09-28%2000:00:00.0&hidden_OccurrenceDate_2=2015-10-05%2000:00:00.0#%2Fpublic%2FP2%2FMidcap%2FFinancial%2FDashboards%2FWell_Profile
JRXML:
<itemHyperlink hyperlinkType="Reference">
<hyperlinkReferenceExpression><![CDATA["./dashboard/viewer.html#%2Fpublic%2FP2%2FMidcap%2FFinancial%2FDashboards%2FWell_Profile"+"&hidden_WellConcatenated_0=" + $V{WellConcatenated_0} + "&hidden_OccurrenceDate_1=" + $P{RecordDate_0_1} + "&hidden_OccurrenceDate_2=" + $P{TimeStampMinusOneWeek}]]></hyperlinkReferenceExpression>
</itemHyperlink>
I know I am naming the input controls correctly because if i change my link type to report execution and link to a simple report using those input controls the proper report opens and the input control values are passed correctly.
I would also appreciate if anyone has other references they can point me to for drilling down TO a dashboard from a report.
I'm working with 6.3 and was able to resolve the issue with a small modification to the HyperlinkReferenceExpression syntax.
Specifically, I removed the "_hidden" before the input control resource IDs:
HyperlinkReferenceExpression:
original syntax:
"./dashboard/viewer.html#%2Fpublic%2FP2%2FMidcap%2FFinancial%2FDashboards%2FWell_Profile"
+"&hidden_WellConcatenated_0=" + $V{WellConcatenated_0}
+"&hidden_OccurrenceDate_1=" + $P{RecordDate_0_1}
+"&hidden_OccurrenceDate_2=" + $P{TimeStampMinusOneWeek}
modified syntax:
"./dashboard/viewer.html#%2Fpublic%2FP2%2FMidcap%2FFinancial%2FDashboards%2FWell_Profile"
+"&WellConcatenated_0=" + $V{WellConcatenated_0}
+"&OccurrenceDate_1=" +$P{RecordDate_0_1}
+"&OccurrenceDate_2=" + $P{TimeStampMinusOneWeek}
I'm assuming you're running 6.4.0. I'm not sure that approach is still valid.
You will likely need to register a custom hyperlink handler in your report in order to drill-down to a Dashboard. See here for more details: http://community.jaspersoft.com/wiki/how-use-custom-hyperlink-handler-dashboard-jasperreports-server
And here: http://www.helicaltech.com/use-custom-hyperlink-handler-with-a-dashboard-in-jasperreports-server/
Let me know if that works for you on 6.4.0!
My solution is a bad solution., but it worked for me.
In my Dataset - query I used the following:
Select p.printer_name, p.display_name, $P{start_date_1} as start_date_param, ....
Then, use the start_date_param as a field in the hyperlink.
I would like to know can we convert a image into base64 and save it in a database and access it in the views.
I have searched google and stackoverflow, all of them starts from middle like encoding or displaying the image.
I need to know how can we convert a image url/path(lets say i store image inside my app and its url stored in column)
How to encode it as base64 before saving(should we convert to base64 first and save in db?).
How to display it in the views
You can split this task to three or four steps:
getting the image
encoding to base64
storing it in database (optionaly)
display it in views
Getting the image
From Assets pipeline
If you are using Rails asset pipeline for that, you can use Rails.application.assets hash to get to image: Rails.application.assets['image_name.png'].to_s will give you the content of image_name.png image.
from file - local or by url
Here is the question about that on StackOverflow.
encode
Base64 Ruby module docs tells how to use Base64 encoding in Ruby:
Base64.strict_encode64(your_content_here)
NOTE: in this case strict_encode64 is preferrable over just encode64 because it doesn't add any newlines. (credit goes to Sergey Mell for pointing that out)
From docs:
encode64 - ... Line feeds are added to every 60 encoded characters.
strict_encode64 - ... No line feeds are added.
Store it in database (optionaly)
I suggest you to create a separate ActiveRecord model for that, with field of type text to keep base64 representation of image.
Display it in views
You can provide data-url to src attribute of img tag, so, the browser will decode image from base64 and display it just like regular image:
<img src="data:image/png;base64,YOUR_BASE64_HERE"/>
Don't forget to change image format to whatever format you are using in data:image/png section.
UPDATE (2018-08-22): I have tried to use urlsafe_encode64, as suggested by Xornand, and for me it produces the output that is not recognized as image by the browser.
Tried in both Firefox 61.0.2 and Chromium 68.0.3440.106.
For the sake of reference and to enable experimentation, here are results themselves.
Image used as "original" (resized it to be even more small to reduce the size of base64 output):
encode64: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opvn2CRxLDL5ShB8ihgB+GKKBH//2Q==
strict_encode64:
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urlsafe_encode64:
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I am printing an EPS File generated with following credentials.
%-12345X#PJL JOB
#PJL ENTER LANGUAGE = POSTSCRIPT
%!PS-Adobe-3.0
%%Title: InvoiceDetail_combine
%%Creator: PScript5.dll Version 5.2.2
%%CreationDate: 10/7/2011 4:46:59
%%For: Administrator
%%BoundingBox: (atend)
%%Pages: (atend)
%%Orientation: Portrait
%%PageOrder: Special
%%DocumentNeededResources: (atend)
%%DocumentSuppliedResources: (atend)
%%DocumentData: Clean7Bit
%%TargetDevice: (HP Color LaserJet 4500) (2014.200) 0
%%LanguageLevel: 2
%%EndComments
While doing Selection Printing on Ricoh Afficio 2090 or any other drivers/printers get the following error printed on the sheets
ERROR: undefined
OFFENDING COMMAND: F4S47
Stack:
.
Kindly Review and suggest a turn around for the same as i am already stuck in this hell. I have tried to convert/extract in PS but all in vain. I am using gsview to Print and view these files.
This is the problem:
%%PageOrder: Special
A ps document with "Special" page order can NOT be re-ordered. You cannot do a selection or range with this file because it is broken for this use. You must reprocess the file using Distiller or ghostscript (ps2ps or ps2pdf) in order to print selected or re-ordered pages from the document.
You can avoid this by generating your postscript files with a real Postscript™ driver (one not created by Microsoft).
The GSView Documentation has more about this.
Previously:
This line ...
%%TargetDevice: (HP Color LaserJet 4500) (2014.200) 0
... tells us that the file was generated with HP printers as a target. So this really is not an EPS file. Because it's not Encapsulatable. To generate output on a printer the file has to execute the showpage operator, which is a no-no for EPS files.
So uncheck the EPS box (it's a big fat lie, anyway), and select (install) a Generic Postscript driver. If you need to send it to multiple makes of printer, the file needs to make as few assumptions about the printer as possible.
The first thing is that this is not a valid EPS file, as it has PJL attached at the front. Many PostScript printers will strip this off, but by no means all.
This probably is not the source of the problem.
There is no way to 'review' the problem as you have not supplied the complete PostScript program. Without that there is no way to tell what is actually wrong, the error message tells you that the interpreter encountered 'F4547' while trying to parse a token, and that this has not been defined as a routine.
Most likely the file is corrupt, either damaged in some way, or possibly it is a biinary file and has been transmitted by some process which does has done some kind of conversion (CR/LF is common). The offending command looks like its ASCIIHex encoded, so that may be a red herring.
If you want additional help, you are going to have to make the whole program available somewhere.