Point Cloud Library and While Loop
up vote
0
down vote
favorite
i am new to C++ and PCL. i wish to save the values of pointer in while loop and wanted to display the saved one . Here is part of my code . Please guide how to save the value of "coefficients->values[0] ,coefficients->values[1], coefficients->values[2], coefficients->values[3]" in an array each time loop runs.
// While 20% of the original cloud is still there
while (cloud_filtered->points.size () > 0.20 * nr_points)
{
// Segment the largest planar component from the remaining cloud
seg.setInputCloud (cloud_filtered);
seg.segment (*inliers, *coefficients);
if (inliers->indices.size () == 0)
{
std::cerr << "Could not estimate a planar model for the given dataset." << std::endl;
break;
}
std::cerr << "Model coefficients: " << coefficients->values[0] << " "
<< coefficients->values[1] << " "
<< coefficients->values[2] << " "
<< coefficients->values[3] << std::endl;
}
pointers while-loop save point-cloud-library
asked Nov 12 at 10:51
Moazza
12
add a comment |
up vote
0
down vote
favorite
i am new to C++ and PCL. i wish to save the values of pointer in while loop and wanted to display the saved one . Here is part of my code . Please guide how to save the value of "coefficients->values[0] ,coefficients->values[1], coefficients->values[2], coefficients->values[3]" in an array each time loop runs.
// While 20% of the original cloud is still there
while (cloud_filtered->points.size () > 0.20 * nr_points)
{
// Segment the largest planar component from the remaining cloud
seg.setInputCloud (cloud_filtered);
seg.segment (*inliers, *coefficients);
if (inliers->indices.size () == 0)
{
std::cerr << "Could not estimate a planar model for the given dataset." << std::endl;
break;
}
std::cerr << "Model coefficients: " << coefficients->values[0] << " "
<< coefficients->values[1] << " "
<< coefficients->values[2] << " "
<< coefficients->values[3] << std::endl;
}
pointers while-loop save point-cloud-library
asked Nov 12 at 10:51
Moazza
12
add a comment |
up vote
0
down vote
favorite
up vote
0
down vote
favorite
i am new to C++ and PCL. i wish to save the values of pointer in while loop and wanted to display the saved one . Here is part of my code . Please guide how to save the value of "coefficients->values[0] ,coefficients->values[1], coefficients->values[2], coefficients->values[3]" in an array each time loop runs.
// While 20% of the original cloud is still there
while (cloud_filtered->points.size () > 0.20 * nr_points)
{
// Segment the largest planar component from the remaining cloud
seg.setInputCloud (cloud_filtered);
seg.segment (*inliers, *coefficients);
if (inliers->indices.size () == 0)
{
std::cerr << "Could not estimate a planar model for the given dataset." << std::endl;
break;
}
std::cerr << "Model coefficients: " << coefficients->values[0] << " "
<< coefficients->values[1] << " "
<< coefficients->values[2] << " "
<< coefficients->values[3] << std::endl;
}
pointers while-loop save point-cloud-library
asked Nov 12 at 10:51
Moazza
12
i am new to C++ and PCL. i wish to save the values of pointer in while loop and wanted to display the saved one . Here is part of my code . Please guide how to save the value of "coefficients->values[0] ,coefficients->values[1], coefficients->values[2], coefficients->values[3]" in an array each time loop runs.
// While 20% of the original cloud is still there
while (cloud_filtered->points.size () > 0.20 * nr_points)
{
// Segment the largest planar component from the remaining cloud
seg.setInputCloud (cloud_filtered);
seg.segment (*inliers, *coefficients);
if (inliers->indices.size () == 0)
{
std::cerr << "Could not estimate a planar model for the given dataset." << std::endl;
break;
}
std::cerr << "Model coefficients: " << coefficients->values[0] << " "
<< coefficients->values[1] << " "
<< coefficients->values[2] << " "
<< coefficients->values[3] << std::endl;
}
pointers while-loop save point-cloud-library
pointers while-loop save point-cloud-library
asked Nov 12 at 10:51
Moazza
12
asked Nov 12 at 10:51
Moazza
12
asked Nov 12 at 10:51
Moazza
12
asked Nov 12 at 10:51
Moazza
12
asked Nov 12 at 10:51
Moazza
12
12
add a comment |
add a comment |
1 Answer
1
active
oldest
votes
up vote
2
down vote
I am assuming that you are following this example code since the snippet you added in your question is almost to same. If this is the case, then you can declare a std::vector<pcl::ModelCoefficients> just before the while loop and push the coefficients into that like
std::vector<pcl::ModelCoefficients> coeffs;
while(...){
...
coeffs.push_back(*coefficients);
}
Also check the documentation for pcl::ModelCoefficients here which is nothing but a header and a vector of floats. Note that defining the coeffs as a vector of shared pointers and pushing pointers to the coefficients will not work in this case since previously pushed coefficients will be overwritten by seg.segment(*inliers, *coefficients);.
answered Nov 14 at 23:36
ozlsn
662
Thank you so much for your response . My issue is i want all coefficients , as you said "previously pushed coefficients will be overwritten " . Is there any way i can save all the coefficients in some variable
– Moazza
Dec 3 at 7:11
What he wrote does does not overwrite as he defined the vector with modelcoefficients objects rather than shared pointers. He is explaining why the pointer "coefficients" from your code snippet needs to be dereferenced "*" inside the push_back in order to not overwrite past entries.
– Sneaky Polar Bear
2 days ago
add a comment |
Your Answer
StackExchange.ifUsing("editor", function () {
StackExchange.using("externalEditor", function () {
StackExchange.using("snippets", function () {
StackExchange.snippets.init();
});
});
}, "code-snippets");
StackExchange.ready(function() {
var channelOptions = {
tags: "".split(" "),
id: "1"
};
initTagRenderer("".split(" "), "".split(" "), channelOptions);
StackExchange.using("externalEditor", function() {
// Have to fire editor after snippets, if snippets enabled
if (StackExchange.settings.snippets.snippetsEnabled) {
StackExchange.using("snippets", function() {
createEditor();
});
}
else {
createEditor();
}
});
function createEditor() {
StackExchange.prepareEditor({
heartbeatType: 'answer',
autoActivateHeartbeat: false,
convertImagesToLinks: true,
noModals: true,
showLowRepImageUploadWarning: true,
reputationToPostImages: 10,
bindNavPrevention: true,
postfix: "",
imageUploader: {
brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
allowUrls: true
},
onDemand: true,
discardSelector: ".discard-answer"
,immediatelyShowMarkdownHelp:true
});
}
});
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f53260583%2fpoint-cloud-library-and-while-loop%23new-answer', 'question_page');
}
);
Post as a guest
Required, but never shown
1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
up vote
2
down vote
I am assuming that you are following this example code since the snippet you added in your question is almost to same. If this is the case, then you can declare a std::vector<pcl::ModelCoefficients> just before the while loop and push the coefficients into that like
std::vector<pcl::ModelCoefficients> coeffs;
while(...){
...
coeffs.push_back(*coefficients);
}
Also check the documentation for pcl::ModelCoefficients here which is nothing but a header and a vector of floats. Note that defining the coeffs as a vector of shared pointers and pushing pointers to the coefficients will not work in this case since previously pushed coefficients will be overwritten by seg.segment(*inliers, *coefficients);.
answered Nov 14 at 23:36
ozlsn
662
Thank you so much for your response . My issue is i want all coefficients , as you said "previously pushed coefficients will be overwritten " . Is there any way i can save all the coefficients in some variable
– Moazza
Dec 3 at 7:11
What he wrote does does not overwrite as he defined the vector with modelcoefficients objects rather than shared pointers. He is explaining why the pointer "coefficients" from your code snippet needs to be dereferenced "*" inside the push_back in order to not overwrite past entries.
– Sneaky Polar Bear
2 days ago
add a comment |
up vote
2
down vote
I am assuming that you are following this example code since the snippet you added in your question is almost to same. If this is the case, then you can declare a std::vector<pcl::ModelCoefficients> just before the while loop and push the coefficients into that like
std::vector<pcl::ModelCoefficients> coeffs;
while(...){
...
coeffs.push_back(*coefficients);
}
Also check the documentation for pcl::ModelCoefficients here which is nothing but a header and a vector of floats. Note that defining the coeffs as a vector of shared pointers and pushing pointers to the coefficients will not work in this case since previously pushed coefficients will be overwritten by seg.segment(*inliers, *coefficients);.
answered Nov 14 at 23:36
ozlsn
662
Thank you so much for your response . My issue is i want all coefficients , as you said "previously pushed coefficients will be overwritten " . Is there any way i can save all the coefficients in some variable
– Moazza
Dec 3 at 7:11
What he wrote does does not overwrite as he defined the vector with modelcoefficients objects rather than shared pointers. He is explaining why the pointer "coefficients" from your code snippet needs to be dereferenced "*" inside the push_back in order to not overwrite past entries.
– Sneaky Polar Bear
2 days ago
add a comment |
up vote
2
down vote
up vote
2
down vote
I am assuming that you are following this example code since the snippet you added in your question is almost to same. If this is the case, then you can declare a std::vector<pcl::ModelCoefficients> just before the while loop and push the coefficients into that like
std::vector<pcl::ModelCoefficients> coeffs;
while(...){
...
coeffs.push_back(*coefficients);
}
Also check the documentation for pcl::ModelCoefficients here which is nothing but a header and a vector of floats. Note that defining the coeffs as a vector of shared pointers and pushing pointers to the coefficients will not work in this case since previously pushed coefficients will be overwritten by seg.segment(*inliers, *coefficients);.
answered Nov 14 at 23:36
ozlsn
662
I am assuming that you are following this example code since the snippet you added in your question is almost to same. If this is the case, then you can declare a std::vector<pcl::ModelCoefficients> just before the while loop and push the coefficients into that like
std::vector<pcl::ModelCoefficients> coeffs;
while(...){
...
coeffs.push_back(*coefficients);
}
Also check the documentation for pcl::ModelCoefficients here which is nothing but a header and a vector of floats. Note that defining the coeffs as a vector of shared pointers and pushing pointers to the coefficients will not work in this case since previously pushed coefficients will be overwritten by seg.segment(*inliers, *coefficients);.
answered Nov 14 at 23:36
ozlsn
662
answered Nov 14 at 23:36
ozlsn
662
answered Nov 14 at 23:36
ozlsn
662
answered Nov 14 at 23:36
ozlsn
662
662
Thank you so much for your response . My issue is i want all coefficients , as you said "previously pushed coefficients will be overwritten " . Is there any way i can save all the coefficients in some variable
– Moazza
Dec 3 at 7:11
What he wrote does does not overwrite as he defined the vector with modelcoefficients objects rather than shared pointers. He is explaining why the pointer "coefficients" from your code snippet needs to be dereferenced "*" inside the push_back in order to not overwrite past entries.
– Sneaky Polar Bear
2 days ago
add a comment |
Thank you so much for your response . My issue is i want all coefficients , as you said "previously pushed coefficients will be overwritten " . Is there any way i can save all the coefficients in some variable
– Moazza
Dec 3 at 7:11
What he wrote does does not overwrite as he defined the vector with modelcoefficients objects rather than shared pointers. He is explaining why the pointer "coefficients" from your code snippet needs to be dereferenced "*" inside the push_back in order to not overwrite past entries.
– Sneaky Polar Bear
2 days ago
Thank you so much for your response . My issue is i want all coefficients , as you said "previously pushed coefficients will be overwritten " . Is there any way i can save all the coefficients in some variable
– Moazza
Dec 3 at 7:11
Thank you so much for your response . My issue is i want all coefficients , as you said "previously pushed coefficients will be overwritten " . Is there any way i can save all the coefficients in some variable
– Moazza
Dec 3 at 7:11
What he wrote does does not overwrite as he defined the vector with modelcoefficients objects rather than shared pointers. He is explaining why the pointer "coefficients" from your code snippet needs to be dereferenced "*" inside the push_back in order to not overwrite past entries.
– Sneaky Polar Bear
2 days ago
What he wrote does does not overwrite as he defined the vector with modelcoefficients objects rather than shared pointers. He is explaining why the pointer "coefficients" from your code snippet needs to be dereferenced "*" inside the push_back in order to not overwrite past entries.
– Sneaky Polar Bear
2 days ago
add a comment |
Thanks for contributing an answer to Stack Overflow!
- Please be sure to answer the question. Provide details and share your research!
But avoid …
- Asking for help, clarification, or responding to other answers.
- Making statements based on opinion; back them up with references or personal experience.
To learn more, see our tips on writing great answers.
Some of your past answers have not been well-received, and you're in danger of being blocked from answering.
Please pay close attention to the following guidance:
- Please be sure to answer the question. Provide details and share your research!
But avoid …
- Asking for help, clarification, or responding to other answers.
- Making statements based on opinion; back them up with references or personal experience.
To learn more, see our tips on writing great answers.
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f53260583%2fpoint-cloud-library-and-while-loop%23new-answer', 'question_page');
}
);
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
